BSI BSx5352 AL M BS 5352 : 1981 Contents Page Foreword Cooperating organizations Specification Section one. General 1 Back cover 'Section five. Testing . Page 43. Product pressure testing, Section six. Preparation for Ldspatc.. 10 44. Despatch preparation 2 2 2 2 2 Appendices A. Application to piping systems with flanges in accordance with BS 4504 : Part 1 B. Application to piping systems with screw threads in accordance with BS 2 1 C. Type test for bellows used in bellows seal gate or globe valves D. Details of butt-weld ends Tables 11 1. Scope 2. References 3. Definition 4. Pressure classification 5. Pressure/temperature ratings 6. Nominal sizes 7. Endtypes 8. Information to be supplied by the purchaser Section two. Design 18 18 19 19 3 3 4 9. Shell 1 O. Backseat face 11. Bolting 12. Direction of flow 13. Nameplate 14. Wedge 15. Disk and disk nut 16. Stem 17. Stuffing box 18. Yoke, yoke sleeve and yoke bush 19. Body seat and body seat ring 20. Handwheel 21. Bellows seal 22. Check valves Section three. Materials 4 5 5 5 5 5 6 6 6 7 7 7 7 7 I. Pressure/temperature ratings for class 800 screwed and socket-weld end valves 2. Pressure/temperature ratings for bellows seal valves 3. End type availability according to class and size of valve 4. Minimum body and bonnet wall thickness (excluding pipe ends) 5. Minimum port diameter and seat bore 6. Minimum outside diameter or dimension across flats of body ends 7. Minimum wear travel 8. Minimum stem diameter for wedge gate valves 9. Minimum stem diameter for globe valves 1 O. Packing and stuffing box dimension 1 I. Valve trim material 1 la. Required production pressure tests 3 3 3 4 4 5 6. 6 6 23. Shell 7 24. Body seat ring . 8 25. Body and bonnet/cover gasket 8 26. Wedge, disk, piston or ball 8 27. Yoke 8 28. Handwheel 8 29. Handwheel and yoke bush/sleeve retaining nut 8 30. Yoke bush or sleeve 8 31. Gland 8 32. Bellows 8 33. Trim 8 34. Stem packing 8 35. Bolting 10 36. Nameplate 10 37. Special applications 10 Section four. Marking 6 9 12. Nominal pressu 1 BSI BS*5352 83 I Lb24669 03594 3 BS 5352 : 1981 British Standard Specification for Steel wedge gate, globe and check valves 50 mm and smaller for the petroleum, petrochemical and allied industries Section one. General 2. References 1, Scope The titles of the standards publications referred to in this This British Standard specifies requirements for forged, standard are listed on page 20. cast or bar stock steel wedge gate, globe stop and check 3. Definition valves with flanged, screwed, socket-weld or butt-weld ends, in nominal sizes 50 mm (2 in) and smaller in classes For the purposes of this British Standard the following 150,300,600,800 and 1500 of the following types. definition applies. (a) Wedgegate valves, with outside screw and yoke, nominal size (DN). A numerical designation of size rising stem, bolted or welded bonnet and bolted gland: common to all components in a piping system other than those designated by outside diameter or by thread size. It (1 ) reduced bore, compact (class 800 only); is a convenient round number for reference purposes and and 800 only); is normally only loosely related to manufacturing (2) standard bore. dimensions. (b) Wedgegate valves, with inside screw, rising stem NOTE. It is designated by the letters DN followed by a number. and handwheel, bolted or welded bonnet and gland nut, 4. Pressure classification for use at temperatures up to 425 \"C only, and with screwed and socket-weld ends: This standard applies to valves of the following class ratings : (1 ) reduced bore, compact (class 800 only); 1 50; 300; 600; 800; 1500. (2)standard bore (class 1500 only). NOTE. The number in these class ratings represents the primary (c) Globe valves, including screw down check valves service pressure rating of the valve in Ibf/in2. (straight angle or oblique pattern), outside screw and 5. Pressure/temperature ratings yoke, rising stem and handwheel, bolted or welded 5.1 General. The pressure/temperature ratings bonnet and bolted gland, plug or needle type disk: applicable to valves covered by this standard shall be in (1 ) reduced bore; accordance with tables PE-I to PE-1 2 of BS 1560 : (2) standard bore. Part 2 : 1970 for the particular shell material except that (d) Globe valves, including screw down check valves class 800 valves shall be in accordance with table 1. (straight angle or oblique pattern), inside screw, rising NOTE stem and handwheel, bolted or welded bonnet, gland trim materials I. There is, however, a temperature restriction on certain (see 33.4 and table 1 1 ). nut and plug or needle type disk, for use at temperatures NOTE 2. Inside screw valves are subject to a service temperature up to 425 \"C only: restriction (see 5.2). (1 NOTE 3. Valves with ) reduced bore; pressure/temperature ratings a bellows csompared with standard valves eal may be subject to reduced (2) standard bore. (see 5.3). NOTE. Screwed and socket-weld ends classes 800 and 1500 NOTE 4. Where valves complying only. standard are to be used with the requirements of this at (e) Bellows-sealed valves: reference should be made to service temperatures below -30 \"C, refers to the temperature BS 3351. Service temperature of the fluid in the line at the valve. (1 1 wedge gate, with outside screw and yoke, rising NOTE 5. For pressure/temperature ratings fstem, bolted or welded bonnet, screwed or bolted use in piping systems with flanges in accordance with or valves supplied for BS 4504 : gland, and reduced bore (compact); Part 1 seeA.2. (2) globe (straight angle or oblique pattern), with 5.2 Inside screw valves. The following types of valve outside screw and yoke, rising stem, bolted or welded shall not be used at service temperatures exceeding bonnet, screwed or bolted gland, plug or needle type 425 \"C: disk, and reduced or standard bore. (a) inside screw wedge gate valves; (fl Check valves, with bolted, welded or union cover: (b) inside screw globe and screw down check valves. (1 ) piston type (for angle or horizontal flow); 5.3 Bellows seal valves. The pressure/temperature (2) ball type (for angle or horizontal flow); ratings for bellows seal valves shall be in accordance with table 2, and are a minimum requirement for valves (3) ball type (for vertical flow). complying with the requirements of this standard and NOTE. The terms 'vertical', 'horizontal' and 'angle' relate to the having a body rating in excess of the values specified in axis of the body ends. table 2; for valves with a lower body rating,the values specified in table 2 shall still apply. COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 2 BS 5352 : 1981 Table I. Pressure/temperature ratings for class 800 screwed and socket-weld end valves Service temperature Vlaximb :arbon iteel non-shock service % % chromium- 1 % % molybdenum steel Table 2. Pressure/temperature ratings for bellows seal valves Service temperature Maximum non-shock service pressure rating (see note 1 and 5.3) !ssure rating 5 % chromium- 1/2 % molybdenum steel rest pressure Body Seat “C -30 to 38 50 75 1 O0 125 150 175 200 225 250 275 300 325 350 375 400 42 5 450 454 47 5 500 525 540 bar bar bar “C -30 to 38 50 75 3ar* bar* bar* 1 O0 125 . 150 i 138 137 135 133 132 130 129 128 125 122 116 110 138 137 135 133 132 130 129 128 125 122 116 110 103 97 91 86 80 74 73 68 63 55t 50 138 137 135 133 132 130 129 128 125 122 116 110 103 97 91 86 80 74 73 68 63 55t 50 99 98 97 96 95 94 93 91 90 87 83 79 75 71 67 63 59 55 55t 47 34 22 15 175 200 225 250 275 300 325 350 375 400 425 450 454 475 500 525 540 150 103 103 97 81 71 59 55t 47 34 22 15 t Primary service pressure. The above pressure/temperature ratings apply to the NOTE 1. bellows sealing element and area minimum requirement for valves complying with this standard; bellows ratings higher than the values listed above may be obtainable from individual manufacturers who should be consulted as to the maximum pressure/temperature ratings applicable to their particular product. NOTE 2.The use of valves attemperatures where the creep strength might be the limiting criteria is subject to the establishment of a design life. *I bar = 1 O5 N/mm2 = 1 O0 kPa. tPrimary service pressure. NOTE 1, The above pressure/temperature ratings are the minimum requirement and valves having ratings in excess of these may be obtained from individual manufacturers. NOTE 2. The use of valves at temperatures where the creep strength might be the limiting criterion is subject to the establishment of a design life. 6. Nominal sizes Valves of the following nominal sizes are specified in this standard: DN 8 DN 10 DN 15 DN 20 DN25 DN 32t DN 40 DN 50 Table 3. End type availability according to class and size of valve Nominal size DN (‘A in) (%in) (%in) (3h in) (1 in) (1% in) (1% in) (2 in) I Class 150 300 600 1500 7. End types Table 3 specifies the types of ends available for each class and size of valve covered by this standard. 8 10 15 20 25 32 40 50 A A A A A A ¡A A A A A IA NOTE : A denotes flanged ends and butt-weld ends; B denotes screwed ends; C denotes socket-weld ends. $ Non-preferred size. COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 3 BSI BSr5352 81 W 3624669 03596 7 BS 5352 : 1981 8. Information to be supplied by the purchaser Certain clauses of this standard permit alternatives and the purchaser may require features which depart from this 9.1 General. The shell shall be designed to resist the standard. The purchaser shall state in his enquiry and maximum pressure ratings, to minimize pressure loss and purchase order, the following. to minimize corrosive and erosive effects. (a) Type, class rating and nominal size, standard or 9.2 Body and bonnet wall thickness. With the exception Section two. Design 9. Shell reduced bore (see clauses 1,4,6 and 9.3). of pipe ends, the minimum wall thickness of body and (b) Whether screwed, socket-weld, flanged or butt-weld bonnet, measured at any point, shall be not less than that ends are required (see clause 7). specified in table 4. (1 ) If flanged ends are required, whether welded-on flanges are acceptable, and type of facing (see 9.5). Table 4. Minimum body and bonnet wall (2) If butt-weld ends are required, state the pipe thickness (excluding pipe ends) schedule number or wall thickness, and outside Nominal Minimum body and bonnet wall thickness diameter (see clause 9.7). size (3) If screwed ends are required, state form of thread DN Class 1500 required (see 9.4). Standard bore Standard bore Reduced bore (c) Whether a bolted or welded bonnet/cover is required (see 9-81, or a union nut for check valves rnrn mm mrn (see 22.1 1. 8 3.3 3.0 - (d) Whether a particular form of disk is required (see 10 4.1 3.3 - clause 15). 15 4.8 4.1 5.2 20 5.6 4.8 6.1 (e) Stuffing box requirements for bellows seal valves 25 5.8 5.6 6.7 (see clause 17). 32 6.1 5.8 7.5 (f) The body and bonnet/cover material (see clause 23). 40 7.1 6.1 7.8 50 7.5 7.1 8.6 (9) The body and bonnet/cover gasket type (see clause 25). 9.3 Port diameter and seat bore; The body end ports (h) The bellows material (see clause 32). shall be circular. The port diameter and seat bore shall (i) The nominal trim material (see clause 33). comply with the values specified in table 5. (j) State if any special packing is required, and specify 9.4 Body ends for screwed-end and socket-weld end packing design temperature, if above 400 OC, or if the valves design pressure is above 50 bar (see clause 34). 9.4.1 General, The outside diameter or dimension across (k) Material for bonnet/cover bolting, if required for flats of body ends for all types of screwed-end and operation at process design temperatures below socket-weld end valves shall be not less than the -30 \"C or above 400 OC, or for other special operating minimum values specified in table 6 for classes 800 and conditions (see clause 35). 1500. (I) Special material requirements for valves in highly 9.4.2 Socket-weldends. Socket-weld end valves shall corrosive environment or for low temperature service have circular ends and end faces machined square to the (see clause 37). axis. Socket details shall comply with the requirements of BS 3799. 4 (m) Whether any additional markings are required (see clause 41 ). 9.4.3 Screwed ends. Screwed-end valves shall be of an (n) Whether a lower seat test leakage rate is required for appropriate shape to facilitate tightening and shall have iiûiaLeGeLL): , either hexagonal or circular ends. The ends shall project equirements for special packaging (see 44.6). clear of the body to permit the effective use of a pipe (O) RTable 5. Minimum port diameter and seat bore Nominal size Minimum port diameter and seat bore DN Globe needle Classes 150,300,600 and 800 I Class 1500 valves Wedge gate valves Globe and check valves I Wedgegate Globe and check valves valves Standard bore Reduced bore Standard bore Standard bore mrn rnrn rnrn mm rnm 8 3.0 6.0 - 6.0 - - - 10 3.0 9.0 6.0 9.0 6.0 - - 15 5.0 12.0 9.0 12.0 9.0 11.5 11.0 20 6.5 18.0 12.0 17.5 12.0 15.0 14.5 25 8.5 23.0 18.0 22.5 17.5 19.5 19.0 32 11.0 30.0 23.0 29.5 22.5 28.0 27.0 40 15.0 36.0 30.0 35.0 29.5 32.0 31.0 50 18.5 46.5 36.0 45.5 35.0 40.0 37.5 I COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 4 BSI BS*5352 81 = 1624667 01577 9 BS 5352 : 1981 11. Bolting 1 1 .I This clause is concerned only with that bolting forming part of the valve and is not concerned with bolting for flanged connections between the valve and a pipeline or pipe fitting. wrench. For screwed-end valves with hexagonal ends the across flats dimension shall be suitable for use with open-ended spanners complying with the requirements of BS 192. Thread lengths shall comply with the requirements of BS 3799. The thread shall be in accordance with either API Standard 5B or ANSI B2.1 unless otherwise stated by the purchaser. 9.5 End flanges. End flanges shall comply with the : Part 2. The type of flange requirements of BS 1560 facing shall be specified by the purchaser and shall be one 560 : Part 2 : 1970. of the types shown in figure 1 of BS 1 End flanges shall be either: (a) forged; or (b) cast integral with the body; or (c) welded to the body, if agreed between manufacturer and purchaser. The welds of end flanges attached by butt welding shall comply with the requirements of BS 3351. The attachment of flanges by other welding processes shalf be the subject of agreement between the manufacturer and the purchaser. 9.6 Face-to-face and end-to-end dimensions. Face-to-face dimensions for flanged-end valves and end-to-end dimensions for butt-weld end valves and ring-joint end valves shall conform to the dimensions specified in BS 2080. 9.7 Butt-weld ends. Butt-weld ends shall conform to the details specified in appendix D. For butt-weld ends, the purchaser shall state either: (a) the pipe schedule number and outside diameter; or (b) the pipe wall thickness and outside diameter. 1 1.2 The working stress in bolting material for bonnet/cover flanges at the primary service pressures given in clause 5 shall not exceed 62 N/mm2, assuming that the pressure acts upon an area circumscribed by the outside periphery of the gasket or, for a ring joint, that the pressure acts through the pitch circle of the ring joint. Bonnet/coverflange bolting shall be of the stud or stud bolt type. Not less than four bolts shall be used in any O mrn (% in) flange and no bolting shall be less than 1 diameter. Stud bolts and nuts shall comply with the requirements of BS 4882 except that any bolting smaller than % in shall be screwed in accordance with BS 2693 : Part 1 (UNC) or BS 4439 (metric) to the tolerance grade specified in BS 4882. Studs shall comply with the Part 1 or BS 4439 as regards requirements of BS 2693 : dimensions and BS 4882 as regards materials. NOTE. Studs need not be of the wrench fit type. 1 1.3 Gland bolting shall be one of the following types: (a) hinged bolt secured by either a headed bolt passed through the eye and secured by a nut,or a pin passed through the eye and effectively secured; (b) swing bolt having an integral eye mounted on a trunnion, forged or cast with the bonnet/cover; (c) stud bolt passed through a plain hole in the flange on the bonnet/cover neck and secured to the flange by two nuts; Table 6. Minimum outside diameter or dimension across flats of body ends Nominal size (d) stud bolts screwed into a tapped hole in the flange on the bonnet/cover neck and secured by a lock nut; (e) headed bolt passed through a plain hole in the flange on the bonnet/cover neck, and secured by a nut if required. Bolts, stud bolts and nuts shall be threaded metric or UNC and the dimensions of the threads shall comply with the requirements of BS 4882, BS 1768 (below 12 mm (% in) nominal size), BS 1769, BS 3692 or BS 41 90 except that a square head, side head and tee head bolts are acceptable. DN Minimum outside diameter or dimension across flats of body ends Class 800 Class 1500 mm rnm 8 10 15 20 25 32 40 50 22 25 32 38 45 55 - - 55 38 45 62 75 12. Direction of flow If check valves of the vertical or angle pattern are used, the flow shall be in the upward direction. NOTE. For the purposes of this standard, any line with a slope (upward ordownward) of 5 or less is deemed to be horizontal. Globe valves shall be designed to be suitable for installation in either direction of flow but the preferred direction of flow for globe valves shall be from under the disk. 62 75 80 9.8 Attachment of bonnetlcover. The bonnet or cover shall be attached to the body by means of either: (a) bolting (see clause 11 I; or (b) if specified on the purchase order, welding complying with the requirements of BS 3351. 13. Nameplate The nameplate shall be located on top of the handwheel, 9.9 Flanges between body and bonnetfcover. For the side of the yoke or the side or top of the cover, or, bonnet/cover attachment by bolting, the mating flange between the body and bonnet/cover shall be of a suitable provided that the minimum thickness shall be retained, by drilling or pinning to the wall of a pressure-containing part. shape to provide adequate strength. The joint between body and bonnet/cover shall be of a type that confines the 14. Wedge gasket. The wedge of wedge gate valves shall be of the solid type with integral or deposited faces. The sharp outer edges of 1 O. Backseat face the seating surfaces shall be removed to prevent scoring A backseat face shall be provided for wedge gate and of the body seating surfaces. globe valves. COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 5 BSI BS*5352 81 E Lb24669 CIL598 O W BS 5352 : 1981 The wedge shall be guided in the body to prevent rotation 17. Stuffing box and to ensure re-entry between the seats. The wedge The stuffing box shall be integral with the bonnet/cover shall be provided with a slot at the top to receive the button or teehead of the stem. The minimum values of and shall be flat bottomed. The relationship between the wear travel shall be in accordance with table 7. stuffing box diameter and the stem diameter shall be such that the packing size specified in table 1 O can be accommodated. The depth of the stuffing box shall be not 15. Disk and disk nut less than six times the nominal packing width specified in The disk of globe valves shall be of either: table 10. (a) the flat-faced type; or Table 7. Minimum wear travel (b) the plug type; or (cl if specified by the purchaser, the needle-point type, Nominal seat Minimum wear either loose or integral with the stem. bore size travel When assembled, the disk shall be retained on the stem in rnrn mrn such a way as to prevent any possibility of it becoming a 1 detached in service. Where a disk nut is used it shall be 10 1 securely locked in place. 15 1 When in the fully-opened position, the net area between 20 1 the disk and the seat shall be at least equal to the area 25 1.5 through the seat (see 9.3). 32 1.5 40 2 50 2 16. Stem 16.1 The minimum stem diameter, measured where it passes through the packing, shall be as specified in Table 8. Minimum stem diameter for wedge gate tables 8 or 9 for wedge gate and globe valves valves respectively. Nominal Minimum stem diameter NOTE. These minimum stem diameters may not be adequate for size all seating designs, stem materials and service conditions. DN Classes 150,300,600 and 800 Class 1500 16.2 The stem shall have a bevelled, spherical orflat seat Standard bore machined on it to seat on to the backseat when the valve Standard bore Reduced bore is fully opened or, for globe valves, the seating shall be on the stem or on the disk nut. rnrn rnm rnrn 16.3 Stem threads shall be of ACME or other trapezoidal 8 7.0 7.0 - form for stem diameters 12 mm and above. For smaller 10 8.5 7.0 - 15 9.5 8.5 12.5 stem diameters the choice of thread shall be at the option 20 11.0 9.5 14.5 of the manufacturer. 25 16.4 On inside screw gate and all globe valves the stem - 12.5 11.0 16.0 32 14.5 12.5 17.5 shall be of sufficient length to ensure that the handwheel 40 16.0 14.5 19.0 stands clear of the yoke when the valve is in the worn 50 19.0 16.0 20.5 closed position. The upper end of the stem shall be provided with positive and adequate location for mounting Table 9. Minimum stem diameter for globe valves the handwheel, e.g. a square end, keyway or other suitable means. Nominal Minimum stem diameter size 16.5 Stems on gate valves shall have an integral end, in DN Classes 150,300,600 and 800 Class 1500 the form of a teehead, fitting into a slot in the top of the Standard bore wedge to provide flexibility between the stem and wedge. Standard bore Reduced bore Threaded or pinned connections between the stem and the wedge shall not be used. The design of outside screw mrn rnrn rnrn stems shall be such as to prevent the wedge leaving the 8 8.0 8.0 - stem, or the base of the stem turning in the wedge during 10 9.5 8.0 - operation of the valve. Stems for inside screw valves shall 15 11.0 9.5 12.5 have an integral end in the form of a button which rotates 20 12.5 11.0 16.0 25 14.5 during operation of the valve. 12.5 16.0 32 16.0 14.5 19.0 16.6 The design of the stem disk attachment on globe 40 19.0 16.0 19.0 valves shall be such that the disk can articulate to permit 50 19.0 19.0 20.5 correct alignment with the seat, the thrust point being of radiused form, and shall be such that the disk cannot Table 1 O. Packing and stuffing box dimensions become detached in service. Retention shall be by an effective method. Nominal stem diameter Nominal packing width 16.7 Stems on needle valves shall have the disk as an integral part or alternatively shall be such that the needle rnrn rnm . can articulate to permit correct alignment with the seat, 7.0 up to and including 9.5 2.5 the thrust point being of radused form. The stem shall be Above 9.5 up to and including 12.5 3.0 such that the disk cannot become detached in service. Above 12.5 up to and including 19.0 5.0 Retention shall be by an effective method. Above 19.0 6.0 COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 6 BSI BS85352 83 3624bb9 03593 2 BS 5352 : 1981 18. Yokeiyoke sleeve and yoke bush 22.2.1 Piston type. The piston shall be in the form of a 18.1 Yoke:The yoke shall be either integral with the cylinder, the lower end of which is shaped to form a bonnet or screwed and secured effectively on to the seating face. The cylindrical part shall fit into the shell or bonnet. guide, with a bleedhole, so as to make an effective 18.2 Yoke sleeve, The yoke sleeve on wedge gate valves dashpot.The piston shall be of sufficient length to ensure shall be machine finished on all contact surfaces. its effective guidance over the whole distance of its travel. 18.3 When in the fully-opened position, the net area between Yoke bush. The yoke bush on globe valves shall be either screwed or otherwise fitted into the yoke and the seating face and the seat shall be at least equal to the locked in position. area through the seat. 22.2.2 Balltype. The design shall be such that at the top 19. Body seat and body seat ring end of travel of the ball a cushioning effect is obtained. A 19.1 single point contact shall not be used. Body seat. The body seat shall be eithec (a) integral with the body shell; or When in the fully-opened position the net area between (6) a separate insert; or the ball and the seat shall be at least equal to the area (c) in the case of steel shells, a hard faced deposit. through the seat. 19.2 Body seat ring. If fitted, the body seat ring shall be 22.3 Piston and ball guides. The design of piston and ball secured in such a way that it cannot loosen in service. The guides shall be as specified in 22.3.1 and 22.3.2 in and either respectively. e seat ring in globe valves shall be screwed shoulder-seated or bottom-seated and provided with lugs, 22.3.1 Piston type. Piston-type check valves shall have an slots or a hexagon socket to facilitate removal. The integral or separate guide of sufficient length to ensure dimension of the seat bore shall be as specified in table 5. effective guidance over the full length of piston travel. 22.3.2 Ball type. 20. Handwheel (a) Horizontal pattern. These check valves shall be 20.1 The handwheel shall be preferably of a spoked provided with a removable guide to locate the ball design with knobs or studs projecting beyond the outside throughout its travel. For union or welded cover valves diameter of the wheel to provide an effective grip. Valves the guide shall be integral with the cover. shall be closed by turning the handwheel in a clockwise For bolted cover valves the guide shall be separate from direction. The handwheel shall be suitably marked with an the cover, closed at its upper end and be provided with a arrow and the word 'OPEN' or 'CLOSE' or 'SHUT' (as metric tapped hole or other means to facilitate removal. appropriate) to indicate the operating direction of rotation. The guide shall be located in position between the body 20.2 The handwheel shall be secured to the yoke sleeve and cover flanges. or stem in such a way as to preclude loosening in service. The guide shall be correctly located relative to the body port by a dowel or other positive means. 21. Bellows seal (b) Verticalpattern. These check valves shall be provided Except for the teehead or button, the whole of the stem, with guides that shall be integral with either the seat, back seating arrangement and stem packing shall be body or cover. The travel of the ball shall be limited by a isolated from the line medium by a flexible metallic grid or by other suitable means, which shall permit adequate flow when the ball is in the fully-opened a bellows. The bellows shall be attached to the bottom end of the position. stem and the body or bonnet by welding. Globe valve stems shall be prevented from rotating by provision of a Section three. Materials spline or similar arrangement. The design of the bellows and attachment shall be such 23. Shell that the valve head assembly is capable of a minimum The material for the body and bonnet/cover shall be cycle life of 1 O O00 cycles for globe valves and specified in the purchase order and shall be selected from 2000 cycles for wedge gate valves where one cycle is those listed in BS 1 560 : Part 2, except that flat covers specified as fully open to fully closed to fully open. may be made from plate complying with the requirements The suitability of the bellows assembly design shall be of BS 1501 provided that it has the same nominal demonstrated by means of prototype tests upon composition as the shell. representative samples in accordance with appendix C. NOTE. Bar stock materials for bodies and union nuts should be selected from BS 1502, BS 1503 or BS 970. 22. Check valves All pressure-containing parts involved in welding operations shall have the carbon content restricted as 22.1 Covers. Valves shall be provided with bolted or follows : welded covers or union nuts, as specified by the purchaser (see also 9.8). If union nuts are used they shall be of (a) 0.25 % maximum, for carbon and hexagonal or octagonal shape. carbon-molybdenum steels; NOTE. The outer surface of the union nuts need not be machined. (b) 0.1 5 % maximum,for5 % chromium L' % Union joints shall be of the male and female type with a molybdenum steel; gasket. (c) C* +&* 22.2 Check mechanism. The check mechanism shall 6 to be not greater than 0.41 %,for - either be of the piston type as specified in 22.2.1 or of the carbon-manganese steels. ball type specified in 22.2.2. *C and Mn are the carbon and manganese contents respectively, in percent. COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 7 BSI BS85352 83 BS 5352 : 1981 Lb24667 O3600 5 m 24. Body seat ring A body seat ring made of a material different from its seating surface shall not be inferior to the shell material. Unstabilized austenitic chromiurn- nickel steel BS 1501-304812 BS 1501 -34751 7 Stabilized austenitic chromium-nickel steel (niobium stabilized) NA1 6 nickel-iron-chromium- 25. Body and bonnetlcover gasket The body and bonnet/cover gasket shall be either: (a) as specified in BS 3381; or (b) stainless steel jacketed asbestos; or molybdenum-copper alloys* NA1 4 nickel-chromium-iron alloyt BS 3072-NA1 6 BS 3072-NA1 4 (cl soft iron. The gasket shall be suitable for the pressure/temperature rating of the valve. Any metallic part of the gasket shall have at least the same corrosion resistance as that of the shell. 33. Trim 33.1 Trim shall comprise the following: (a) wedge gate valve; \\ (1 stem; (2) body seat surface; (3) wedge seat surface. 26. Wedge, disk, piston or ball The wedge, disk, piston or ball shall have either integral or weld deposited seating surfaces. Any component with material different from its seating face and also its guides shall be of a material at least equal to that of the shell. Disk-retaining nuts and grid plates shall be of a material not inferior to that of the normal trim. (b) globe valves; (1 ì stem; (2) body seat surface; (3) disk seat surface; (4) disk nut. (c) check valves; (1 ) body seat surface; (2) piston or ball seat surface 33.2 The trim material shall be selected from among those listed in table 1 1 under nominal trim symbols. 27. Yoke Any yoke separate from the bonnet shall be of carbon steel (see also clause 37). 33.3 If a combination trim, e.g. CR 13 and Cu-Ni, is specified, either material shall be used for the body seat surface. The other material of the combination shall be used for the wedge, disk, piston or ball surface. 28. Handwheel The handwheel shall be of steel, malleable iron or nodular iron (see also clause 37). 29. Handwheel and yoke bush/sleeve retaining nut The handwheel and yoke bush/sleeve-retaining nut shall be of a material having a melting point above 955 \"C. Grey cast iron shall not be used. If carbon steel is used it shall be suitably protected against corrosion. 33.4 Stems shall be wrought material. 33.5 The temperature limitations of certain trim material will restrict the pressure/temperature ratings of the valve to which they are fitted. '33.6 Seat surfaces shall have: (a) for trim with symbol CR 13, a hardness of 250 HB minimum with a difference in hardness between mating body and wedge seat surfaces in the case of wedge gate valves, and between body seat and ball, in the case of ball check valves, of not less than 50 HB; (b) for other trims, the appropriate minimum hardness is given in table 11.' 33.7 Finished stems shall have a hardness not less than' 200 HB. 30. Yoke bush or sleeve The yoke bush or sleeve shall be of non-rusting metal having a suitable bearing quality and a melting point above 955 \"C. 31, Gland A one-piece gland or any other gland flange shall be of steel. The bushing of a one-piece bushed gland or the gland proper of two-piece gland shall be made of a material having a melting point above 955 \"C. ' 33.8 The steel supplier shall supply a certificate of compliance stating that the material conforms with the requirements of the standard. 33.9 Material intended for the manufacture of stems shall have a yield stress (Re) not less than 205 N(mrn2. 32. Bellows Bellows material shall be selected such that the maximum .33.10 Differential hardness between mating seating' surfaces other than CR 13/CR 13 shall be of the service temperature is below the creep range. - manufacturers' standard (see table 11 for the NOTE. Typical material for bellows are as follows. materials affected).' Material Corresponding British Standard specif ication A general purpose material suitable for the full pressure/temperature range of the valve shall be supplied. The packing shall contain a suitable corrosion * Known as Incoloy 825. inhibitor. Graphite impregnated or coated packing shall t Known as Inconel 600. not be used on valves with stainless steel shells or trim COPYRIGHT British Standards Institute on ERC Specs and Standards8 materiais unless suitably inhibited. Licensed by Information Handling Services Stabilized austenitic chromium-nickel steel (titanium stabilized) Austenitic chromium-nickel- % molybdenum steel (2% molybdenum) BS 1501-321512 33.1 1 Where BS 970-3 1 OS24 is specified, the material shall be supplied in accordance with the general clauses of BS 1503 or BS 1506, as appropriate. The chemical composition and mechanical properties shall be in accordance with BS 970-31 OS24. f e % BS 1501-316812 34. Stem packing Coc\:*&d on c?? 7w particular packing. BS 5352 1981 e , G pz W p\\ O C .- t W p\\ ã ã -r - Y w - 3 O N al C 3 Y al u) - 3 3 O N C P4 m 4- al C - u) al L, 2 o m ir o Z I I m m COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services BSI BSr5352 81 W 1624669 01602 9 BS 5352 : 1981 35. Bolting 35.1 Unless otherwise specified in the purchase order, body and bonnet/cover bolting material shall be: (a) BS 1506-62 1 A, for bolting less than ?4 in; accordance with the requirements of the standard. The accuracy of such a claim is therefore solely the manufacturer's of third party responsibility. Enquiries as to the availability certification to support such claims should be addressed to the Director, British Standards Institution, Maylands Avenue, Hemel (b) grade B7/2H of BS 4882, for bolting equal to or greater than ?4 in. administered by Hempstead, Herts HP2 4SQ in the case of certification marks BSI or to the appropriate authority for other certification marks. 35.2 Unless otherwise specified in the purchase order, (b) the manufacturer's figure or number identifying the material for gland and yoke bolting shall be steel of at valve in all respects. The same figure or number shall, least 430 N/mm2 tensile strength. Free-cutting carbon therefore, only be used for valves that are identical in steels shall not be used. design, detail, dimensions and material, and that have 36. Nameplate interchangeability parts. NOTE. The nameplate material and attachment shall be of pressure/temperature rating of the valve from the This identification may be used to determine the corrosion-resistant material to the manufacturer's manufacturer's technical data. standard. Where the valve is subject to special NOTE. Brass and aluminium are acceptable. pressure/temperature limitations, e.g. bellows sealed valves, this shall be so indicated. 37. Special applications (c) Valve trim identification. Trim material shall be If valves are specified for highly corrosive seryices or indicated in the following order using the appropriate environments, or for low temperature service, the material symbol from table 1 1. specification for all parts shall be subject to agreement Gate valves: (1) stem; (2) wedge; (3) seat. between the purchaser and the manufacturer. Globe valves: (1) stem; (2) disk; (3) seat. Check valves: (1 ) piston or ball; (2) seat. Section four. Marking Examples of valve trim identification are: 38. General Stem CR 13 CR13 Each valve shall be clearly marked with the body and WedgeHF or CR13-HF-CR13 or HF identification plate marking specified in clauses 39 to 42. Seat CR 13 CR13 39. Body markings Body markings shall be integral with the body or on a plate 41. Additional markings securely fixed to the body. If on a plate, this shall be Additional markings may be used at the option of the separate and distinct from the identification plate referred manufacturer or at the request of the purchaser provided to in clause 40. The body marking shall state the that: following. (a) they do not conflict with any of the markings (a) Nominal size (e.g. DN 15). specified in this standard; (b) Class rating (e.g. 300). (b) they are in accordance with BS 5383. (c) Shell material identification, ¡.e. the standard symbol specified in appendix D of BS 1560 : Part 2 : 1970. 42. Omission of markings (d) Manufacturer's name or trade mark. Where the size or shape of the valve body precludes the (e) Melt identification is required on all inclusion of all the required markings, some of the pressure-containing steel castings in an unmachined markings may be omitted from the body provided that location. they are shown on the identification plate. (f) Pipe end flanges and body to bonnet/cover flanges The sequence of omission shall be: grooved for ring joints and the rings to be used with (a) nominal size; them shall be marked with the corresponding.ring (b) manufacturer's name or trade mark; number (e.g. R25). This identification shall be placed on (c) class rating. the rim of both pipe end flanges or the bonnet/cover end flange of the body as applicable and on the outside Section five. Testing __ periphery of the ring. In the case of non-standard ring '43. Product pressure testing __ jointsforbody/bonnetflangestheflange and ring shall - - be marked RSpL. All valves shall be pressure tested by the manufacturer before despatch in accordance with BS 6755 : Part (9) Arrow to indicate direction of flow (globe and check table 1 la of this standard. - ___ -- 1 and * valves only). The test duration time shall be 15 s for each test\\ - 40. Identification plate marking Seat test leakage rate A shall apply for gate and globe Identification markings shall include the following: valves including bellows sealed valves and rate C shall atxdv (a) The number of this British Standard, ¡.e. BS 5352. .. , for check valves (see BS 6755 : Part 1). NOTE i. If a lower seat test leakage rate is required for checkvalves NOTE. by Marking BS 5352 on or in relation to a product is a claim this should be specified by the purchaser in the enquiry or purchase the manufacturer that the product has been manufactured in Order. For bellows sealed valves the hydrostatic shell and seat test pressures shall be as specified in ES 6755 : Part 1 or 1.5 (for the shell) or 1.1 (for the seat) times the manufacturer's bellows rating, whichever is the lesser. COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 10 L BSI BS*535Z 81 L624669 01603 Q W Bellows shall be tested in accordance with appendix C. NOTE 2. This may be covered by a manufacturer's certificate unless 'qiherwise required by the purchaser.' - Table 1 la. 1 Required production pressure tests Valve type I Required tests Shell 1 Backseat 1 Seat pressure Low ! I seat I Hydrostatic I Hydrostatic I Hydrostatic Pneumatic Hydrostatic Gate d J Globe J V' Check d d Bellows J v' sealed gate and globe COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services BSI BS85352 81 = Lb246 01604 2 BS 5352 : 1981 44.3 With the exception of austentic stainless steel valves, machined or threaded surfaces shall be coated with an easily removed rust preventive (see BS 1 133 : Section 6). 44.4 Gate and globe valves wedges and disks shall be in the closed position when despatched. Section six. Preparation for despatch 44. Despatch preparation 44.1 After testing, each valve shall be drained, cleaned and dried, prepared and suitably protected for despatch in such a way as to minimize the possibility of deterioration during transit and storage. - 44.2 Unmachined external surfaces shall be rust-proofed, except for austenitic stainless steel valves, which shall be left in their natural state. 44.5 Body ends shall be suitabiy sealed to exclude foreign matter during transit and storage- 44.6 When special packaging is necessary, the purchaser shall specify his requirements. 14 Scre -weld end Part ref. Name of part Part ref. Name of part 1 Sleeve nut 11 Yoke 2 Handwheel 12 Gland packing 3 Nameplate 13 Body/bonnet stud 4 Stem 14 Body/bonnet nut 5 Sleeve 15 Bonnet 6 Gland nut 16 Body/bonnet gasket 7 Gland swing bolt 17 Body 8 Swing bolt retainer* 18 Seat 9 Gland 19 Wedge I O Gland stud * Item 8 may be welded or screwed to the yoke. Figure 1. Typical wedge gate valve (outside screw) COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 11 .- -..- BSI BS*5352 83 E 3624669 03605 4 BS 5352 : 1981 Scre Part ref. Name of part Part ref. Name of part 1 Handwheel nut 9 Bonnet 2 Handwheel 10 Body bonnet studs 3 Nameplate 11 Body/bonnet nuts 4 Stem 12 Body/bonnet gasket 5 Union gland nut 13 Wedge 6 Gland 14 Seat 7 Gland packing 15 Body 8 Gland ring Figure 2. Typical wedge gate valve (inside screw) COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 12 BSI BS*5352 BI = Ib2qbbî OIãïbO6 b BS5352 : 1981 - O e O Part ref. Name of part Part ref. Name of part 1 Handwheel nut 11 Gland stud 2 Handwheel 12 Swing bolt retainer* 3 Nameplate 13 Gland packing 4 Stem 14 Bonnet 5 Yoke bush nut 15 Body/bonnet gasket 6 Yoke bush 16 Disk 7 Yoke 17 Seat 8 Gland nut 18 Body/bonnet studs 9 Gland swing bolt 19 Body/bonnet nuts 110 Gland 20 Body * Item 12 may be weldedor screwed to the yoke. Figure 3. Typical globe valve (outside screw) e COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 13 COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 14 _. BSI BS%5352 81 6 2624669 02608 T = Welded on flange end 6 1 7 2 3 4 Forged/cast flange end Socket-weid en Partref. Nameofpart Part ref. Name of part Cover Body/cover stud 3 Union nut Body/cover nut 4 Body/cover nut i Figure 5.Typical vertical ball checkvalve e COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 15 BS 5352 : 1981 BSI BS*5352 BI m 3624669 03609 -- I m BS 5352 : 1981 *\\ ’\\ end Part ref. Name of part I Part ref. Name of part 1 B od y/cove r stii d 7 Ball guide 2 Body/cover nut 8 Gasket 3 Cover 9 Union cover 4 Piston guide 10 Ball 5 Piston disk 11 Body 6 Seat Figure 6. Typical piston/bail check valve COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 16 BSI BS*5352 83 m 36124669 03630 8 m Screw -weld end Part ref. Name of part I Partref. Nameofpart 1 Sleeve nut 12 Gland packing 2 H andwheel 13 Body /bonnet stud 3 Nameplate 14 Body/bonnet nut 4 Stem 15 Bellows cover 5 Sleeve 16 Body/bonnet gasket 6 Gland nut 17 Body 7 Gland swing 18 Seat 8 Swing bolt retainer* 19 Wedge 9 Gland 20 Sealing ring (top) 10 Gland stud 21 Sealing ring (bottom) 11 Yoke 22 Bellows a COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 17 BS 5352 : 1981 BSI BSW5352 BL BS 5352 : 1981 Appendix A Application to piping systems with flanges in accordance with BS 4504 : Part 1 A.1 General. If specified by the purchaser, valves complying with the requirements of BS 5352 may be supplied for use in piping systems with flanges in When this is the case accordance with BS 4504 : Part I. all the requirements of BS 5352 apply with the following qualifications. Table 13. Hydrostatic test pressure Table 13. Table delled. L A.2 Pressurehemperature ratings. The pressure/temperature ratings of valves with flanges in accordance with BS 4504 : Part 1 shall be in accordance with table AI of BS 4504 : Part 1 : 1969. Pressure/temperature ratings for valves in materials other than those listed in table AI of BS 4504 : Part 1 : 1969 shall be as agreed between the purchaser and the manufacturer. A.3 Nominal pressure, class rating and nominal size range. Valves in accordance with this appendix with flanges of the nominal pressure rating given in column 1 of table 12 shall have the same face-to-face dimensions as valves of the corresponding class given in column 2 and whose flanges are in accordance with BS 1560 : Part 2. Column 3 gives the applicable nominal size range. - - ._ A.6 Marking. When supplied for use in piping systems whose flanges are in accordance with BS 4504 : Part 1, valves shall be permanently marked with the appropriate This marking shall nominal pressure rating (e.g. PN 25). either replace or supplement the requirements of section four of this standard. The supplementary marking shall appear on the rims of both body end flanges. to be supplied by the purchaser. This A.7 Information shall be as listed in clause 8 of this standard except that item (a) shall be extended by: (1 that valves are to comply with the requirements of this appendix; (2) nominal pressure rating and nominal size. Table 12. Nominal pressure, class rating and nominal size range 1 Nominal pressure rating PN 2 Class Nominal size range DN Appendix B Application to piping systems with screw threads in accordance with BS 21 B.l General. If specified by the purchaser, valves complying with the requirements of BS 5352 may be supplied for use in piping systems with screw threads in accordance with BS 2 I. When this is the case all the requirements of this standard apply with the following qualifications. (a) Screwed body ends shall have female threads complying with the requirements of BS 2 1, either taper or parallel, as specified in the purchase order. 7/1, NOTE. BS 2 1 is technically equivalent to IS0 (b) End faces of parallel-threaded valves shall have a smooth finish at right angles to the thread axis. The minimum outside diameter of the sealing face shall be in accordance with table 14. 10 16 25 40 150 150 300 300 A.4 Body end flanges A.4.1 Dimensions. Body end flange dimensions shall comply with the requirements.of BS 4504 : Part 1 except that flange thicknesses may be the appropriate values from BS 1560 : Part 2. Flange thicknesses shall be not Part I. When less than those specified in BS 4504 : flange thicknesses comply with the requirements of BS 4504 : Part 1, the neck dimensions shall also comply with the requirements specified in BS 4504 : Part I. A.4.2 Spot facing or back facing. Spot facing or back facing shall comply with the requirements of BS 1560 : Part 2. Table 14. Minimum outside diameter of sealing face for valves with parallel threads in accordance with BS 21 Nominal size of thread Thread designation, R, Minimum outside diameter of sealing face a 2 A.4.3 Finish ofjoint surface. The joint surface finish shall comply with the requirements of BS 4504 : Part I. A.5 Inspection and testing. A5 Text deleted' . _.___II__. 8 10 15 20 mm 18 25 32 40 50 22 26 32 39 49 55 68 NOTE. The dimensions given in table 14 comply with the requirements of IS0 1 179. COPYRIGHT British Standards Institute on ERC Specs and Standards18 Licensed by Information Handling Services BS 5352 : 1981 B.3 Marking. Valves shall be clearly marked with the thread designation on each end of the valve. B.4 Information to be supplied by the purchaser. This shall be as listed in clause 8 of this standard except that item (b) shall be extended by: D.2 For valves required to connect to pipe of less than 4.8 mm wall thickness, the angle37.5 f 2.5 shall not apply and weld ends shall be finished to a slight chamfer or be square, at the option of the manufacturer. D.3 the dimensions of butt-weld ends are specified in table 15. Regardless of tolerances specified for dimensionsA and B, the thickness of the weld end shall never be less than 87.5 % of the nominal thickness of the pipe. NOTE I. For outside diameters and wall thicknesses of standard steel pipes see ES 1600 : Part 2. NOTE 2. For end-to-end dimensions of butt-weld end valves see BS 2080. (1 ) that valves are to comply with the requirements of this appendix; (2) whether a parallel or tapered thread is required. Appendix C Type test for bellows used in bellows seal gate or globe valves C.1 The bellows shall be fatigue tested either by cycling a completely assembled valve head assembly, or in a rig in which the bellows attachments simulate the actual design installation. C.2 Prior to the cycling test, a hydraulic pressure test shall be carried out in accordance with clause 43 of this standard. C.3 The frequency of cycling is not to exceed one cycle per second. One complete cycle shall consist of movement of the bellows from the designed compressed condition to the designed extended condition and back to the designed compressed condition. C.4 Cycling shall be carried out at ambient temperature and at the corresponding rated pressure. C.5 A minimum of three bellows of each size and type shall be cycled to a minimum number of: (a) 1 O O00 cycles, for globe valves; (b) 2000 cycles, for wedge gate valves. The bellóws shall be subjected to NDT examination on completion of the minimum number of cycles and shall show no sign of cracking. 45 1 OA \\ -Typical sections a 4 I .6 t 0.8 mm A is the outside diameter of weld end (see table 15) B is the inside diameter of pipe (for tolerance on i?, see table 15) t is the wall thickness of pipe Figure 8. Weld-end for connection to pipe of wall thickness t of 4.8 mm to 22 mm inclusive Table 15. Dimensions of butt-weld ends Nominal size DN A Tolerance I la Appendix D Details of butt-weld ends .D.I The inside and outside surfaces of valve weld ends shall be machine finished overall. Weld-end bores shall be machined parallel for a distance of 1.5t and then run out as indicated in figure 8 without abrupt change of section. The outsides of weld-ends shall be run out in the manner indicated in figure 8 so that sharp angles and abrupt changes of slopes are avoided. 15 20 mm 23 28 25 32 40 35 44 50 50 62 L B mm +O, -0.8 t 0.8 I a COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services 19 BSI BS*5352 83 m Lb24bb9 03633 3 BS 5352 : 1981 m Standards Dublieations referred to BS 21 Pipe threads for tubes and fittings where pressure-tight joints are made on the threads BS 3076 Open-ended wrenches (not including B.A. sizes) BS 192 BS 3351 Method for Brinell hardness test BS 240 Part 1 Testing of metals BS 3381 Wrought steels in the form of blooms, billets, bars BS 970 and forgings BS 3600 Part 1 Carbon and carbon manganese steels including free cutting steels Part 2 Direct hardening alloy steels, including alloy BS 3692 steels capable of surface hardening by nitriding Part 3 Steels for case hardening BS 3799 Part 4 Stainless, heat resisting and valve steels Part 5 Carbon and alloy spring steels for the BS 3808* manufacture of hot-formed springs Part 6 SI metric values (for use with BS 970 : Parts 1 to 5) Packaging code BS 1133 BS 41 90 Section 6 Temporary protection of metal surfaces BS 4439 against corrosion (during transport and storage) BS 4504 Steel wedge gate valves (flanged and butt- BS 1414* welding ends) for the petroleum, petrochemical and allied industries BS 4882 Steels for fired and unfired pressure vessels. BS 1501 Plates 46 BS 51 ~- 7 -- Part 1 Carbon and carbon manganese steels. Imperial units Specification for material marking and colour BS 5383 Part 2 Alloy steels. Imperial units coding of metal pipes and piping system Part 3 Corrosion and heat resisting steel. Imperial components in steel, nickel alloys and titanium units allovs 6755 BS 1501-6 Steels for use in the chemical, petroleum and allied 3s Tes:inc of valves\\- industries .. . Part 1 Specification for production Specification for steel forgings (including semi- BS 1503 Pipe threads wherepressure-tight jointsare mede IS0 7/1 finished forged products) for pressure purposes on the threads Specification for steel castings for pressure BS 1504 Part 1 Designation, dimensions and tolerances purposes IS0 1 179 Pipe connectionsfor plain end steel and other Steel pipe flanges and flange fittings (nominal BS 1560 metal tubes in industrial applications Reference is also mede tothe following American National sizes % in to 24 in) for the petroleum industry Standards Institute, American Petroleum Institute and American Part 2 Metric dimensions Society for Testing and Materials standards (obtainable through Flanged and butt-welding end steel plug valves for BS 570* BSIJ the petroleum industry (excluding well-head and API STD 5B Threading gauging and thread Inspection of flow-line valves) casing, tubing and line pipe threads API STD 5L Line pipe Dimensions of steel pipe for the petroleum BS 600 API STD 602*API Specification for compact design carbon Steel industry wedge gate valves for refinery use Part 1 Imperial units (except Dryseal) ANSI 82.1 Pipe threads Part 2 Metric units 82 Specification for forged or mlled alloy-steel pipe , ASTM Al Unified precision hexagon bolts, screws and nuts BS 768 flanges, forged fittings, and valves and partsfor s (UNC and UNF threads). Normal series high temperature service ASTM A2 17 Specification for martensitic stainless ateel and Unified black hexabon bolts, screws and nuts BS 769 alloy steel castings for pressure-containing parts (UNC and UNF threads). Heavy series suitable for high temperature service Steel check valves (flanged and butt-welding BS 868* ASTM A276 Specification for stainless and heat-resisting steel ends) for the petrochemical and allied industries bars and shapes ASTM A35 1 Specification for austenitic steel castingsfor huh- Steel globe and globe stop and check valves BS 873* temperature service (flanged and butt-welding ends) for the petroleum, ASTM A479 Specification for stainless and heat-resisting steel petrochemical and allied industries bars and shapes for use in boilers and other BS 2080 Face-to-face, centre-to-face, end-to-end and pressure _- vessels - __ _c centre-to-end dimensions of flanged and butt-welding end steel valves for the petroleum, petrochemical and allied industries Screwed studs BS 2693 Part 1 General purpose studs BS 307 1 BS 3072 Nickel-copper alloy castings Specification for nickel and nickel alloys: sheet and plate Specification for nickel and nickel alloys: bar Piping systems for petroleum refineries and petrochemical plants Metallic spiral wound gaskets for use with flanges to BS 1560 : Parts 1 and 2 Specification for dimensions and masses per unit length of welded and seamless steel pipes and tubes for pressure purposes IS0 metric precision hexagon bolts, screws and nuts Steel pipe fittings, screwed and socket-welding for the petroleum industry Cast and forged steel flanged, screwed and socket-welding wedge gate valves (compact design), sizes 2 in and smaller, for the petroleum industry IS0 metric black hexagon bolts, screws and nuts Screwed studs for general purposes Flanges and bolting for pipes, valve and fittings. Metric series Part 1 Ferrous Bolting for flanges and pressure containing purposes -. A - I -1 * Referred to in foreword only. 7n COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services -- BSI BS*5352 81 W 1624669 0187614 5 -- .BS 5352 : 1981 implenientina the standard, of necessary details such as symbols and size, type or grade designations. Enquiries should be addressed to the Publications Manager, BSI, Linford Wood, Milton Keynes MK14 6LE. The number for telephone enquiries is 0908 220022 and for telex 825777. O British Standards Institution, 1981 Contract requirements. A British Standard does not purport to include all the necessary provisions of a contract. Users of British The following BSI references relate to the work on this standard: Standards are responsible for their correct application. Committee reference MEE/I 91 Draft for comment 76/73013 DC This British Standard, having been prepared under the direction of the Mechanical Engineering Standards Committee, was published under the authority of the Executive Board and comes into effect on 31 March 1981. Revision of British Standards. British Standards are revised, when necessary, by the issue either of amendments or of revised editions. It is important that users of British Standards should ascertain that they are in possession of the latest amendments or editions. Automatic updating service. BSI provides an economic, individual and automatic standards updating service called PLUS. Details are available from BSI Enquiry Section at Milton Keynes, telephone 0908 221 166, telex 825777. Information on all BSI publications is in the BSI Catalogue, supplemented each month by BSI News which is available to subscribing members of BSI and gives details of new publications, revisions, amendments and withdrawn standards. Any person who, when making use of a British Standard, encounters an inaccuracy or ambiguity, is requested to notify BSI without delay in order that the matter may be investigated and appropriate action taken. British Standards Institution. Incorporated by Royal Charter, BSI is the independent national body for the preparation of British Standards. It is the UK member of the International Organization for Standardization and UK sponsor of the British National Committee of the International Electrotechnical Commission. In addition to the preparation and promulgation of standards, BSI offers specialist services including the provision of information through the BSI Library and Standardline Database; Technical Help to Exporters; and other services. Advice can be obtained from the Enquiry Section, BSI, Milton Keynes MK14 6LE, telephone 0908 221166, telex 825777. Copyright. Users of British Standards are reminded that copyright subsists in all BSI publications. No part of this publication may be reproduced in any form without the prior permission in writing of BSI. This does not preclude the free use, in the course of Cooperating organizations The Mechanical Engineering Standards Committee, underwhose direction this British Stanr:rii.d was prepared, consists of representatives from thi: ioliowing; *Associa ted Offices Teclìiiical Committee Association of Consulting Engineers *Association of Hydraulic Equipment Manufacturers Association of Mining, Electrical and Mechanical Engineers British Compressed Air Society British Electrical and Allied Manufacturers' Association (BEAMA) *British Gas Corporation British Gear Manufacturers' Association *British Internal Combustion Engine Manufacturers' Association British Pump Manufacturers' Association *British Steel Corporation *British Steel Industry *British Valve Manufacturers' Association Ltd. Chartered Institution of Building Services Crown Agents for Oversea Governments and Administrations Department of the Environment Department of Industry (Mechanical Engineering) *Department of industry (National Engineering Laboratory) Department of Trade (Marine Division) Department of Transport *Electricity Supply Industry in England and Wales *Engineering Equipment Users' Association Federation of Manufacturers of Construction Equipment and Cranes *Health and Safety Executive Institution of Gas Engineers *Institution of Mechanical Engineers institution of Plant Engineers Institution of Production Engineers *Lloyd's Register of Shipping London Transport Executive Machine Tool Industry Research Association *Ministry of Defence *National Coal Board *Oil Companies Materials Association Process Plant Association Society of Motor Manufacturers and Traders Limited Telecommunication Engineering and Manufacturing Association (TEMA) Water-tube Boilermakers' Association The organizations marked with an asterisk in the above list, together with the following. were directly represented on the Technical Committee entrusted with the preparation of this British Standard: Amalgamated Union of Engineering Workers Association of Bronze and Brass Founders British Chemical Engineering Contractors' Association British Industrial Measuring and Control Apparatus Manufacturers' Association British Ship Research Association British Shipbuilders Cbmpe Copper Development Association Copper Tube Fittings Manufacturers' Association Council of Ironfoundry Associations Greater London Council Institution of Chemical Engineers Institution of Civil Engineers Institution of Water Engineers and Scientists National Brassfoundry Association National Water Council Society of British Gas Industries Steel Casting Research and Trade Association Water Companies' Association [A v) Co 00 Amd. No. 1Date of issue Text affected .1MEE/191 British Standards Institution - 2 Park Street London W1A 2BS - Telephone 01-629 9000 . Telex 266933 8807 -7-0.2k-B COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services AMD 5815 Amendment No. 1 published and effective from 31 January 19 to BS 5352 : 1981 Specification for steel wedge gate, globe and check valves 50 mm and smaller for the petroleum, petrochemical and allied industries Revised text AMD 5815 January 19 Clause 33.6 Delete the existing clause and substitute the following: '33.6 Seat surfaces shall have: (a) for trim with symbol CR 13, a hardness of 250 HB minimum with a difference in hardness between mating body and wedge seat surfaces in the case of wedge gate valves, and between body seat and ball, in the case of ball check valves, of not less than 50 HB; (b) for other trims, the appropriate minimum hardness is given in table 11 .' AMD 5815 January 19 Clause 33. I O Delete the existing clause and substitute the following: '33.10 Differential hardness between mating seating surfaces other than CR 13/CR 13 shall be of the manufacturers' standard (see table 11 for the materials affected).' AMD 5815 January 19 Table I I. Valve trim material In column 4, against trim material 'HF' and seat surface '66-26-5, Cr-Co-W' insert '(see note 5)' under the value '350'. At the foot of the table insert a new note 5, 'NOTE 5. A differential hardness between seat surfaces is not required.' 01-O-1.3k-6 COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services PSE17 AMD6560 Amendment No. 2 published and effective from 31 August 1990 to BS 5352 : 1981 Specification for steel wedge gate, globe and check valves 50 mm and smaller for the petroleum, petrochemical and allied industries Revised text AMD 6560 August 1990 Contents Delete the entries for section five and clause 43 and substitute the following. 'Section five. Testing 43. Product pressure testing' Under the heading 'Tables', after the entry for table I1 insert the following, 'I 1 a. Required production pressure tests' Delete the entry for table 13 and substitute the following. '1 3. Table deleted' AMD 6560 August 1990 Foreword In paragraph 4, line 4, delete 'BS 5146' and substitute 'BS 6755 : Part 1'. After paragraph 4 insert the following note. 'NOTE, Requirements for final inspection and supplementary inspection at all stages of manufacture previously specified in BS 5146 : Part 1 : 1974 (now withdrawn) should be stated by the purchaser in his enquiry or order.' AMD 6560 August 1990 Clause 8. Information to be supplied by the purchaser Delete the existing item (n) and substitute the following. '(n) Whether a lower seat test leakage rate is required for check valves (see clause 431.' AMD 6560 August 1990 Clause 43. inspection and pressure testing Delete the existing clause and substitute the following. '43. Product pressure testing All valves shall be pressure tested by the manufacturer before despatch in accordance with BS 6755 : Part 1 and table ?la of this standard. COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling ServicesI BSI BS*5352 81 m 1624669 03975 4 I The test duration time shall be 15 s for each test. Seat test leakage rate A shall apply for gate and globe valves including bellows sealed valves and rate C shall apply for check valves (see BS 6755 : Part 1). NOTE 1. If a lower seat test leakage rate is required for check valves this should be specified by the purchaser in the enquiry or purchase order. For bellows sealed valves the hydrostatic shell and seat test pressures shall be as specified in BS 6755 : Part 1 or 1.5 (for the shell) or 1 .I (for the seat) times the manufacturer's bellows rating, whichever is the lesser, Bellows shall be tested in accordance with appendix C. NOTE 2. This may be covered by a manufacturer's certificate unless otherwise required by the purchaser.' AMD 6560 August 1990 New table Ila Insert the following new table 1 la after clause 43. Table 1 la. Required production pressure tests Valve type I Required tests Shell Backseat Seat pressure seat Hydrostatic Pneumatic Hydrostatic Low Gate Globe Check Bellows sealed gate and globe d J J d J d J J AMD 6560 August 1990 Clause A.5 Inspection and testing Delete the clause entirely and substitute 'A.5 Texf deleted'. AMD 6560 August 1990 Table 13. Hydrostatic test pressure Delete the table entirely and substitute 'Table 13. Table deleted'. AMD 6560 August 1990 Clause B.2 Inspection and testing Delete the clause entirely and substitute 'B.5 Text deleted'. AMD 6560 August 1990 Standards publications referred to Delete the existing reference to BS 5146. After the reference to BS 5383 insert the following. 'BS 6755 Testins of valves. Part 1 Specification for production pressure testing requirements.' 9008-1-1 k-B COPYRIGHT British Standards Institute on ERC Specs and StandardsLicensed by Information Handling Services
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