MSS SP-118-2007 法兰端,无法兰端,螺纹端和焊接端紧凑型钢制截止阀和止回阀(化工和石油精炼用).pdf

MSS SP-118-2007 MSS Compact Steel Globe threaded and socket welding end valves are limited to NPS 2 1/2 and smaller. Valves covered under this Standard Practice shall meet the requirements of ASME B16.34, “Standard Class“. The following valves are covered by this Standard Practice a Class 800 valves with threaded, socket- welding, or butt-welding ends an inside screw with rising stem ISRS and threaded packing nut or an outside screw and yoke OS an OS and a bolted, union, welded or threaded and seal welded bonnet joint. c Classes 150, 300, and 600 flanged-end, flangeless end, threaded, socket-welding, or buttwelding-end OS shall be made of carbon steel, ductile iron, or malleable iron; and shall be of ample size for easy opening and closing. Clockwise rotation of the handwheel shall close the valve. Cast iron or non- ferrous materials shall not be used. 4. EXAMINATION AND TEST 4.1 Examination 4.1.1 A visual examination shall be pered by the valve manufacturer of all bodies, bonnets, covers, and closure elements to assure conance with material specifications and ASME B16.34. Castings shall comply with the requirements of MSS SP-55. 4.1.2 All nondestructive examinations shall be pered in accordance with written procedures. 4.1.3 Supplementary examinations are required only if specified in the purchase order and only to the extent specified. Magnetic particle, radiographic, liquid penetrant, and ultrasonic examination of steel forgings and castings shall be in accordance with MSS SP-53, SP-54, SP-93, and SP-94 or with the purchasers own acceptance criteria. 4.2 Pressure Test 4.2.1 Except as noted in Section 4.2.2, each valve shall be pressure tested by the manufacturer as specified in MSS SP-61 and ASME B16.34. 4.2.2 No visually detectable leakage is allowed for the duration of the closure test of NPS 2“ and smaller globe valves and resilient seated check valves. The maximum allowable closure leakage for metal seated check valves shall be 3 ml of liquid/min./unit of NPS or 1.5 cu ft. of gas/hr./unit of NPS. 4.3 Repair of Defects 4.3.1 Defects in the shell of a cast or forged valve, revealed by inspection or test, shall be repaired as permitted by the applicable material specification or ASME B16.34. 5. SHIPPING INATION 5.1 End Protection for Female Threaded and Socket-Welding Ends 5.1.1 Except for individually packaged valves, the female ends of threaded and socket-welding ends shall be protected with metal, wood, or plastic plugs. 5.2 End Protection of End Flanges and Butt- Welding Ends 5.2.1 End flanges and buttwelding ends shall be covered to protect gasket surfaces, welding ends, and valve internals. Covers shall be wood fiber, wood, plastic, or metal. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- 标准分享网 w w w .b z f x w .c o m 免费下载 MSS STANDARD PRACTICE SP-118 6 TABLE 1 Pressure-Temperature Ratings for Class 800 Globe Gr L7, 1000F; Gr B16, 1000F; Gr B8-CL 1, Gr B8A-CL 1A, Gr B8M-CL 1, and Gr B8MA-CL 1A, 1500F; Gr B8-CL 2, Gr B8M-CL 2, Gr B8M2-CL 2B and Gr B8M3-CL 2C, 1000F. b ASTM A 320, Gr L7 bolts, and ASTM A 194, Gr 4 nuts are also acceptable. c ASTM A 193, Gr B8-CL 1, Gr B8A-CL 1A, Gr B8M-CL 1, Gr B8MA-CL 1A, Gr B8M2-CL 2B, and B8M3-CL 2C bolting may be subsituted, provided that the requirements of Section 3.4 are met. d ASTM A 193, Gr B8-CL 2 bolts are also acceptable. e ASTM A 194, Gr 7 nuts are also acceptable. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- MSS STANDARD PRACTICE SP-118 9 TABLE 3 Body and Bonnet Wall Thickness Minimum Wall Thickness a Class 800 Valve Size NPS inches 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4 0.12 0.13 0.16 0.19 0.22 0.23 0.24 0.28 0.33 0.38 0.47 a See Sections 3.3.2 and 3.3.3. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- 标准分享网 w w w .b z f x w .c o m 免费下载 MSS STANDARD PRACTICE SP-118 10 Typical Specification Grade Trim Number Nominal Trim Seat Surface Hardness HB Minimuma Material Type Cast Forged Welded 1; 101b F6 c 13Cr ASTM A217 CA15 ASTM A182 F6a AWS A5.9 ER410 2 304 d 18Cr-8Ni ASTM A351 CF8 ASTM A182 F304 AWS A5.9 ER308 3 F310 d 25Cr-20Ni * ASTM A182 F310 AWS A5.9 ER310 4; 104b Hard F6 750e Hard 13Cr * h * 5; 105b Hardfaced 350e Co-Cr Ag l * AWS A5.13 E or R CoCrA 5A; 105Ab Hardfaced 350e Ni-Cr * * j 6; 106b F6 and Cu-Ni 250f 175f 13Cr Cu-Ni ASTM A217 CA15 * ASTM A182 F6a i AWS A5.9 ER410 * 7; 107b F6 and Hard F6 250f 750f 13Cr Hard 13Cr ASTM A217 CA15 * ASTM A182 F6a h AWS A5.9 ER410 * 8; 108b F6 and Hardfaced 250f 350f 13Cr Co-Cr Ag ASTM A217 CA15 l ASTM A182 F6a * AWS A5.9 ER410 AWS A5.13 E or R CoCrA 8A; 108Ab F6 and Hardfaced 250f 350f 13Cr Ni-Cr ASTM A217 CA15 * ASTM A182 F6a * AWS A5.9 ER410 j 9 Monel d Ni-Cu Alloy * Manufacturer’s Standard * 10 316 d 18Cr-Ni ASTM A351 CF8M ASTM A182 F316 AWS A5.9 ER316 11 Monel and Hardfaced d 350f Ni-Cu Alloy Trim 5 or 5A * * Manufacturer’s Standard * * See Trim 5 or 5A 12 316 and Hardfaced d 350f 18Cr-8Ni Trim 5 or 5A ASTM A351 CF8M * ASTM A182 F316 * AWS A5.9 ER320 See Trim 5 or 5A 13 Alloy 20 d 19Cr-29Ni ASTM A351 CN7M ASTM B473 AWS A5.9 ER320 14 Alloy 20 and Hardfaced d 350f 19Cr-29Ni Trim 5 or 5A ASTM A351 CN7M * ASTM B473 * AWS A5.9 ER320 See Trim 5 or 5A 15 Hardfacedk 350e Co-Cr Ag l * AWS A5.13 E or R CoCrA 16 Hardfacedk 350e Co-Cr Ag l * AWS A5.13 E or R CoCrA 17 Hardfacedk 350e Co-Cr Ag l * AWS A5.13 E or R CoCrA 18 Hardfacedk 350e Co-Cr Ag l * AWS A5.13 E or R CoCrA NOTES * Not Applicable a HB erly BHN is the symbol for the Brinell hardness number per ASTM E 10. b Trims 101, 104, 105, 105A, 106, 107, 108 and 108A denote trims that permit the use of free machining grades of 13 Cr material. Specifiy trims 1, 4, 5, 5A, 6, 7, 8 and 8A when free-machining grades of 13 Cr materials is not desired. c Seat and disc/piston/swing check seat surfaces should be 250 HB minimum with a 50 HB differential between the seat ring and disc/piston/swing check seat surfaces. d Manufacturer’s standard hardness. e Differential hardness between the seat and disc/piston/swing check seat surfaces is not required. f Hardness differential between the seat and disc/piston/swing check seat surfaces shall be the manufacturer’s standard. g This classification includes such trademarked materials as Stellite 6TM, Stoody 6TM, and Wallex 6TM h Case hardened by nitriding to a thickness of 0.13 millimeters 0.005 inch minimum. i Manufacturer’s standard with 30Ni minimum. j Manufacturer’s standard hardfacing with a maximum iron content of 25 percent. k Stem material differs. See Table 5. l Solid cast Co-CrA discs may be used. TABLE 4 Nominal Seating Surface Materials Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- MSS STANDARD PRACTICE SP-118 11 TABLE 5 Stem Material Trim Number Note Material Type Hardness HB Typical Specification Type 1 13Cr 200 Min. ASTM A 276-T410 or T420 101 13Cr 200 Min. ASTM A 276-T410 or T420 ASTM A 582-T416 2 18Cr-8Ni Manufacturer’s Standard ASTM A276-T304 3 25Cr-20Ni Manufacturer’s Standard ASTM A276-T310 4 through 8A 13Cr 200 Min. ASTM A 276-T410 or T420 104 105 105A 106 107 108 108A 13Cr 200 Min. ASTM A 276-T410 or T420 ASTM A 582-T416 9 and 11 Ni-Cu Alloy Manufacturer’s Standard Manufacturer’s Standard 10 and 12 18Cr-8Ni Manufacturer’s Standard ASTM A276-T316 13 and 14 19Cr-29Ni Manufacturer’s Standard ASTM B473 15 18Cr-8Ni Manufacturer’s Standard ASTM A276-T304 16 18Cr-8Ni Manufacturer’s Standard ASTM A276-T316 17 18Cr-8Ni Manufacturer’s Standard ASTM A276-T347 18 19Cr-29Ni Manufacturer’s Standard ASTM B473 Note Trims 1 and 4 through 8A denote trims that prohibit free-machining grades of 13 Cr material. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- 标准分享网 w w w .b z f x w .c o m 免费下载 MSS STANDARD PRACTICE SP-118 12 TABLE 6 Minimum Stem Diameter a Class 800 Class 1500 Valve Size NPS inches inches 1/4 3/8 9/32 9/32 13/32 13/32 1/2 3/4 11/32 3/8 13/32 7/16 1 1 1/4 7/16 1/2 9/16 5/8 1 1/2 2 9/16 5/8 5/8 21/32 2 1/2 3 11/16 3/4 3/4 1 4 7/8 1 1/8 a See Section 3.7.2 A finish machining tolerance of 0.005 inches is permitted. TABLE 7 Valve Seat Port Opening Minimum Seat Bore a Class 800 Class 1500 Valve Size NPS inches inches 1/4 3/8 1/4 1/4 1/4 1/4 1/2 3/4 3/8 1/2 3/8 1/2 1 1 1/4 11/16 15/16 5/8 7/8 1 1/2 2 1 1/8 1 7/16 1 1/16 1 3/8 2 1/2 3 1 3/4 2 1 1/2 1 7/8 4 2 3/4 2 1/2 a In-line check valves minimum bore diameters shall be manufacturer’s standard. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- MSS STANDARD PRACTICE SP-118 13 TABLE 8 Minimum Depth of Packing a Class 800 Class 1500 Outside Screw and Yoke Valves Inside Screw with Rising Stem Valves Outside Screw and Yoke Valves Valve Size NPS inches inches inches 1/4 3/8 1/2 1/2 1/2 1/2 7/8 7/8 1/2 3/4 5/8 5/8 5/8 5/8 7/8 1 1 1 1/4 1 1 7/8 15/16 1 3/16 1 1/2 1 1/2 2 1 1/8 1 1/8 15/16 1 1/8 1 1/2 1 1/2 2 1/2 3 1 1/4 1 1/2 - - 1 3/4 1 7/8 4 1 3/4 - 2 a See Section 3.13.2. Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- 标准分享网 w w w .b z f x w .c o m 免费下载 MSS STANDARD PRACTICE SP-118 14 PART NAMES 1. Handwheel Nut 2. Handwheel 3. Identification Plate 4. Stem 5. Packing Nut 6. Gland 7. Packing 8. Packing Ring when used 9. Bonnet 10. Bonnet Bolting 11. Gasket 12. Disc Nut 13. Disc 14. Body PART NAMES 1. Handwheel Nut 2. Handwheel 3. Identification Plate 4. Stem 5. Stem Nut 6. Yoke 7. Gland Bolting 8. Gland 9. Packing 10. Bonnet Bolting 11. Bonnet 12. Gasket 13. Disc Nut 14. Disc 15. Body FIGURE 1 Typical Inside Screw with Rising Stem ISRS Globe Valve FIGURE 2 Typical Outside Screw and Yoke OSY Globe Valve Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- MSS STANDARD PRACTICE SP-118 15 PART NAMES 1. Handwheel Nut 2. Identification Plate 3. Handwheel 4. Stem 5. Gland 6. Packing Nut 7. Packing 8. Packing Ring when used 9. Bonnet 10. Gasket 11. Bonnet Nut 12. Disc Nut 13. Disc 14. Body PART NAMES 1. Handwheel Nut 2. Identification Plate 3. Handwheel 4. Stem 5. Stem Nut 6. Yoke 7. Gland Bolting 8. Gland 9. Packing 10. Bonnet 11. Disc Nut 12. Disc 13. Body FIGURE 3 Typical Union Bonnet Inside Screw ISRS Globe Valve FIGURE 4 Typical Seal Weld Bonnet Outside Screw and Yoke OSY Globe Valve Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- 标准分享网 w w w .b z f x w .c o m 免费下载 MSS STANDARD PRACTICE SP-118 16 PART NAMES 1. Identification Plate 2. Bonnet Bolting 3. Bonnet/Cover 4. Gasket 5. Piston 6. Body PART NAMES 1. Identification Plate 2. Bonnet Bolting 3. Bonnet/Cover 4. Alignment Pin 5. Gasket 6. Ball 7. Body FIGURE 5 Typical Piston Check Valve FIGURE 6 Typical Ball Check Valve Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- MSS STANDARD PRACTICE SP-118 17 PART NAMES 1. Fastener 2. Identification Plate 3. Bonnet Bolting 4. Gasket 5. Hinge 6. Bonnet/Cover 7. Disc 8. Hinge Pin 9. Seat Ring 10. Disc Nut 11. Body 12. Alignment Pin FIGURE 7 Typical Swing Check Valve Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- 标准分享网 w w w .b z f x w .c o m 免费下载 MSS STANDARD PRACTICE SP-118 18 PART NAMES 1. Yoke 2. Spring 3. Body 4. Cap Disc PART NAMES 1. Yoke 2. Spring 3. Body 4. Cap Disc FIGURE 8 Typical In-Line Check Valve Flangless or Insert Type FIGURE 9 Typical In-Line Check Valve Threaded Type Copyright MSS Provided by IHS under license with MSS Not for ResaleNo reproduction or networking permitted without license from IHS --,,,,,,--,,,,,,,--- MSS STANDARD PRACTICE SP-118 19 ANNEX A Referenced Standards and Applicable Dates This Annex is an integral part of this Standard Practice and is placed after the main text for convenience. Standard Name or Description ANSI, ANSI/ASME, ASME/ANSI, ASME B1.5-2004 Acme Screw Threads B1.8-2001 Stub Acme Screw Threads B1.20.1-2001 Pipe Threads, General Purpose inch B16.5-2003 Flanges and Flanged Fittings B16.10-2000 Face-to-Face and End-to-End Dimensions of Ferrous Valves B16.11-2005 Forged Steel Fittings, Socket-Welding and Threaded B16.25-2003 Butt-Welding Ends B16.34-2004 Valves -- Flanged, Threaded, and Welding-End B36.10M-2004 Welded and Seamless Wrought Steel Pipe B36.19M-2004 Stainless Steel Pipe ASTM Standard Specification for A 105/A 105M-05 Forgings, Carbon Steel, for Piping Components A 182/A 182M-05a Forged or Rolled Alloy Steel Pipe Flanges, Forged Fittings and Valves and Parts for High-Temperature Service A 193/A 193M-06 Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service A 194/A 194M-05b Carbon and Alloy Steel Nuts for Bolts for High-Pressure and High-Temperature Service A 216/A 216M-04 Carbon-Steel Casting Suitable for Fusion Welding for High-Temperature Service A 217/A 217M-04 Martensitic Stainless Steel and Alloy Steel Castings for Pressure-Containing Parts Suitable for High-Temperature Service A 276-05a Stainless and Heat-Resisting Steel Bars and Shapes A 307-04 Carbon Steel Bolts and Studs, 60,000psi Tensile Strength A 320/A 320M-05a Alloy-Steel Bolting Materials for Low-Temperature Service A 350/A 350M-04a Carbon and Low-Alloy Steel Forgings Requiring Notch Toughness Testing for Piping Components A 351/A 351M-05 Austenitic Steel Castings for High-Temperature Service A 352/A 352M-03 Ferritic and Martensitic Steel Castings for Pressure-Containing Parts Suitable for Low-Tem