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Valve Standard มาตราฐานวาล์ว

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มาตราฐานวาล์ว  VALVE STANDARD

มาตราฐานวาล์ว API ASME ASTM

เพื่อนๆหลายคนเข้าใจว่า pressure and temperature rating ของวาวล์สามารถพิจารณาใช้ได้จาก ASME B16.5 ซึ่งสามารถใช้ได้แค่บางส่วนเองครับ แต่ผมว่าที่ถูกควรจะพิจารณาใช้จาก ASME B16.34 Valve ?Flange, Thread and Welding Ends เพราะว่ายังให้ข้อมูลเพิ่มเติม higher pressure and temperature rating for welding-ends special class valve

ทีนี้ผมจะมาพูดถึง valve ในแง่ประสบการณ์ของผมดีกว่า เพราะว่าเพื่อนๆ สามารถอ่านเรื่องของ วาวล์อย่างพื้นๆได้จากหนังสืออยู่แล้วครับ

1. ใน process plant แล้วนิยมกำหนด spec เป็น API 600 Steel Gate Valves, Flanged and Buttwelding เป็นส่วนใหญ่ เพราะว่าที่ pressure rating เดียวกันกับ ASME B16.34 Valve API 600 Steel Gate Valves จะมีความหนามากกว่าเพราะว่ามีการบวกค่า corrosion allowance มากกว่า ดูตัวอย่างดังตารางข้างล่างนี้ และ Valve API 600 ยังเป็น Outside Screw and Yoke (OS&Y) อีกด้วย

rev.1 
2. เช่นเดียวกันครับสำหรับ Small carbon steel gate valves เช่น forged 150#, 300#, 600#, 800# & 1500# class valves โดยส่วนใหญ่แล้วจะผลิตภายใต้ API 602 และที่ pressure rating เดียวกันกับ ASME B16.34 ที่150#, 300# & 600# Valve API 602 Steel Gate Valves จะมีความหนามากกว่าเพราะว่ามีการบวกค่า corrosion allowance มากกว่าครับ

3. สำหรับงาน pipeline นั้น valve นิยมใช้ valve ภายใต้มาตรฐาน API 6 D ครับ บางครั้ง ผู้ใช้พวก refinery and petrochemical plant ก็นิยมอ้างถึงการทดสอบภายใต้มาตรฐานนี้ครับเนื่องจากมีการทดสอบที่เข้มงวดมากกว่าถึงแม้ว่า valve ผลิตภายใต้มาตรฐาน API 600, 602, 608 or 609 design criteria.

4. ผมจะใช้ flexible type wedge สำหรับงานอุณหภูมิสูงครับเนื่องจากเพื่อชดเชยความแตกต่างของการขยายตัวเมื่อได้รับความร้อน ถ้าใช้ solid wedge valve จะเปิดได้ยากเนื่องจากมันไปติดที่ seat ครับ เขาเรียกว่า galling ครับ

5. solid wedge valve นิยมใช้กับ valve ตัวเล็กๆ หรือ class <= 150

6. Gate valve with soft ?seal จะช่วยเพิ่ม leak-tight ให้ดีขึ้น แต่มีข้อเสียตรงที่ไม่สามารถใช้งานที่อุณหภูมิสูงได้ครับ โดยจะมี temp limit ดังนี้ 

PTFE Polytetrafluoroethylene... 230 C 
FEP................. 200 C 
Viton A............ 200 C 
Buna N............ 120 C 
Neoprene.......... 90 C

API 603 (ASME B16.34)
1-16-2012_1-40-07_PM 

Heavy WALL (API 600)
1-16-2012_1-42-46_PM

API - Valve Standards
API SPEC 6D :Specification for Pipeline Valves (Gate, Plug, Ball and Check Valves) 
Specification for Pipeline Valves. API Specification 6D is an adoption of ISO 14313: 1999, Petroleum and Natural Gas Industries-Pipeline Transportation Systems-Pipeline Valves. This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems.

API 526 
Flanged Steel Pressure Relief Valves. The standard is a purchase specification for flanged steel pressure relief valves. Basic requirements are given for direct spring-loaded pressure relief valves and pilot-operated pressure relief valves as follows: orifice designation and area; valve size and pressure rating, inlet and outlet; materials; pressure-temperature limits; and center-to-face dimensions, inlet and outlet.

API 527 
Seat Tightness of Pressure Relief Valves R(2002). Describes methods of determining the seat tightness of metal- and soft-seated pressure relief valves, including those of conventional, bellows, and pilot-operated designs.

ANSI/API STD 594 
Check Valves: Flanged, Lug, Wafer and Butt-welding. API Standard 594 covers design, material, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for two types of check valves.

API 598 
Valve Inspection and Testing. The standard covers inspection, supplementary examination, and pressure test requirements for both resilient-seated and metal-to-metal seated gate, globe, plug, ball, check, and butterfly valves. Pertains to inspection by the purchaser and to any supplementary examinations the purchaser may require at the valve manufacturer's plant.

ANSI/API 599 
Metal Plug Valves - Flanged, Threaded and Welding Ends. A purchase specification that covers requirements for metal plug valves with flanged or butt-welding ends, and ductile iron plug valves with flanged ends, in sizes NPS 1 through NPS 24, which correspond to nominal pipe sizes in ASME B36.10M. Valve bodies conforming to B16.34 may have flanged end and one butt-welding end. It also covers both lubricated and nonlubricated valves that have two-way coaxial ports, and includes requirements for valves fitted with internal body, plug, or port linings or applied hard facings on the body, body ports, plug, or plug port.

ANSI/API 600 : "Steel Gate Valves - Flanged & Buttwelding Ends" 
Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries - Modified National Adoption of ISO 10434:1998.

API 602 : "Steel Gate Valves - Flanged & Buttwelding Ends" 
Compact Steel Gate Valves - Flanged, Threaded, Welding, and Extended-Body Ends. The standard covers threaded-end, socket-welding-end, butt-welding-end, and flanged-end compact carbon steel gate valves in sizes NPS4 and smaller.

ANSI/API 603 
Corrosion-Resistant, Bolted Bonnet Gate Valves - Flanged and Butt-Welding Ends. The standard covers corrosion-resistant bolted bonnet gate valves with flanged or butt-weld ends in sizes NPS 1/2 through 24, corresponding to nominal pipe sizes in B36.10M, and Classes 150, 300, and, 600, as specified in ASME B16.34.

ANSI/API 607 
Fire Test for Soft-Seated Quarter Turn Valves. The standard covers the requirements for testing and evaluating the performance of straightway, soft-seated quarter-turn valves when the valves are exposed to certain fire conditions defined in this standard. The procedures described in this standard apply to all classes and sizes of such valves that are made of materials listed in ASME B16.34.

API 608 : Metal Ball Valves-Flanged and Butt-Welding Ends 
API 608 is the purchase specification for class 150 and class 300 metal ball valves. Valve design and construction criteria are detailed. Important Note- ball valve working pressures should be based on seat material, not valve class.

API 609 
Butterfly Valves: Double Flanged, Lug- and Wafer-Type. The standard covers design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for gray iron, ductile iron, bronze, steel, nickel-base alloy, or special alloy butterfly valves that provide tight shutoff in the closed position and are suitable for flow regulation

API 6FA 
Specification for Fire Test for Valves. The standard covers the requirements for testing and evaluating the performance of API Spec 6A and Spec 6D valves when exposed to specifically defined fire conditions

API 6FC 
Fire Test for Valve with Automatic Backseats. The standard covers the requirements for testing and evaluating the performance of API Spec 6A and Spec 6D valves with automatic backseats when exposed to specifically defined fire conditions.

API 6RS 
Referenced Standards for Committee 6, Standardization of Valves and Wellhead Equipment.

API 11V6 
Design of Continuous Flow Gas Lift Installations Using Injection Pressure Operated Valves. The standard sets guidelines for continuous flow gas lift installation designs using injection pressure operated valves.

ANSI/API RP 11V7 
Recommended Practice for Repair, Testing, and Setting Gas Lift Valves. The standard applies to repair, testing, and setting gas lift valves and reverse flow (check) valves.

API 520-1 
Sizing, Selection, and Installation of Pressure-Relieving Devices in Refineries: Part I - Sizing and Selection. The recommended practice applies to the sizing and selection of pressure relief devices used in refineries and related industries for equipment that has a maximum allowable working pressure of 15 psig (1.03 bar g or 103 kPa g) or greater.

API 520-2 
Recommended Practice 520: Sizing, Selection, and Installation of Pressure-Relieving Devices in Refineries-Part II, Installation. The recommended practice covers methods of installation for pressure-relief devices for equipment that has a maximum allowable working pressure of 15 psig (1.03 bar g or 103 kPa g) or greater. It covers gas, vapor, steam, two-phase and incompressible fluid service.

ANSI/API 574 
Inspection Practices for Piping System Components. The standard covers the inspection of piping, tubing, valves (other than control valves) and fittings used in petroleum refineries.

ANSI/API 576 
Inspection of Pressure Relieving Devices. The recommended practice describes the inspection and repair practices for automatic pressure-relieving devices commonly used in the oil and petrochemical industries.

ANSI/API 608 
Metal Ball Valves - Flanged and Butt-Welding Ends. The standard covers Class 150 and Class 300 metal ball valves that have either butt-welding or flanged ends and are for use in on-off service.
rev.2

ASME - Valve Standards

ASME A105/105M 
Standard Specification for Carbon Steel Forgings for piping applications

ASME A181/181M 
Standard Specification for Carbon Steel Forgings for General purpose piping

ASME A182/182M 
Standard Specification for forged or rolled alloy-steel pipe flanges, forged fittings and valves and parts for high-temperature service

ASME/ANSI B16.10 : Face-to-Face Dimensions of Ferrous Valves 
B16.10 lists the face to face dimensions of all flanged and buttweld end valves. Screwed and socketweld end valve face-to-face dimensions are not included in this specification.

ASME/ANSI B16.33: Manually Operated Metallic Gas Valves for Use in Gas Piping Systems Up to 125 psig 
General This Standard covers requirements for manually operated metallic valves sizes NPS 1.2 through NPS 2, for outdoor installation as gas shut-off valves at the end of the gas service line and before the gas regulator and meter where the designated gauge pressure of the gas piping system does not exceed 125 psi (8.6 bar). The Standard applies to valves operated in a temperature environment between .20 degrees F and 150 degrees F (.29 degrees C and 66 degrees C). Design This Standard sets forth the minimum capabilities, characteristics, and properties, which a valve at the time of manufacture must possess, in order to be considered suitable for use in gas piping systems.

ASME/ANSI B16.34 : Steel Valves - Flanged & Buttwelding Ends 
ASME B16.34 is the base document from which steel valve pressure/temperature ratings are derived. It also offers additional valve specification data including nondestructive examination procedures for upgrading valves to Special Class. Note: Gate valves manufactured under B16.34 wall thickness minimums may not meet the minimum wall thickness requirement of API 600 & API 602 for class 150, 300 and 600

ASME/ANSI B16.38: Large Metallic Valves for Gas Distribution 
The standard covers only manually operated metallic valves in nominal pipe sizes 2 1/2 through 12 having the inlet and outlet on a common center line, which are suitable for controlling the flow of gas from open to fully closed, for use in distribution and service lines where the maximum gage pressure at which such distribution piping systems may be operated in accordance with the code of federal regulations (cfr), title 49, part 192, transportation of natural and other gas by pipeline; minimum safety standard, does not exceed 125 psi (8.6 bar). Valve seats, seals and stem packing may be nonmetallic.

ASME/ANSI B16.40 :Manually Operated Thermoplastic Gas 
The Standard covers manually operated thermoplastic valves in nominal sizes 1" through 6" These valves are suitable for use below ground in thermoplastic distribution mains and service lines. The maximum pressure at which such distribution piping systems may be operated is in accordance with the Code of Federal Regulation (CFR) Title 49, Part 192, Transportation of Natural and Other Gas by Pipeline; Minimum Safety Standards, for temperature ranges of .20 deg. F to 100 deg. F (.29 deg. C to 38 deg. C). This Standard sets qualification requirements for each nominal valve size for each valve design as a necessary condition for demonstrating conformance to this Standard. This Standard sets requirements for newly manufactured valves for use in below ground piping systems for natural gas [includes synthetic natural gas (SNG)], and liquefied petroleum (LP) gases (distributed as a vapor, with or without the admixture of air) or mixtures thereof.

ASME/ANSI B16.44 : Manually Operated Metallic Gas Valves for Use in House Piping Systems 
This Standard applies to new valve construction and covers quarter turn manually operated metallic valves in sizes NPS 1/2-2 which are intended for indoor installation as gas shutoff valves when installed in indoor gas piping between a gas meter outlet & the inlet connection to a gas appliance.


ASME F1098 
Standard Specification for Envelope Dimensions for Butterfly Valves - NPS 2 to 24 EI-1993 R(1993)

ASME F1370 
Standard Specification for Pressure Reducing valves for Water Systems, Shipboard

ASME F1508 
Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services

ASME F1565 
Standard Specification for Pressure-Reducing Valves for Steam Service

ASME F1792 
Standard Specification for Special Requirements for Valves Used in Gaseous Oxygen Service

ASME F1793 
Standard Specification for Automatic Shut-Off Valves (Also Known as Excess Flow Valves, EFV) for Air or Nitrogen Service

ASME F1794 
Standard Specification for Hand operated, Globe-Style Valves for Gas (Except Oxygen Gas), and Hydraulic Systems

ASME F1795 
Standard specification for Pressure-Reducing Valves for Air or Nitrogen Systems

ASME A230 
Standard specification for steel wire oil - tempered carbon valve spring quality

ASME A232 
Standard specification for chromium - vanadium alloy steel valve spring quality

ASME A350 
Standard specification for forged or rolled carbon and alloy steel flanges forged fittings and valves and parts for low - temperature service

ASTM - Valve Standards


ASTM A126-04 
Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings

ASTM A182/A182M-04 
Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

ASTM A338 
Standard Specification for Malleable Iron Flanges, Pipe Fittings, and Valve Parts for Railroad, Marine, and Other Heavy Duty Service at Temperatures Up to 650?F (345?C)

ASTM A522/A522M-01 
Standard Specification for Forged or Rolled 8 and 9% Nickel Alloy Steel Flanges, Fittings, Valves, and Parts for Low-Temperature Service

ASTM A694/A694M-03 
Standard Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service

ASTM A961-04 
Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications

ASTM A988/A988M 
Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service

ASTM A989/A989M 
Standard Specification for Hot Isostatically-Pressed Alloy Steel Flanges, Fittings, Valves, and Parts for High Temperature Service

ASTM B61-2 
Standard Specification for Steam or Valve Bronze Castings

ASTM B763 
Standard Specification for Copper Alloy Sand Castings for Valve Application

ASTM B834 
Standard Specification for Pressure Consolidated Powder Metallurgy Iron-Nickel-Chromium-Molybdenum (UNS N08367) and Nickel-Chromium-Molybdenum-Columbium (Nb) (UNS N06625) Alloy Pipe Flanges, Fittings, Valves, and Parts

ASTM C1129 
Standard Practice for Estimation of Heat Savings by Adding Thermal Insulation to Bare Valves and Flanges

ASTM F885 
Standard Specification for Envelope Dimensions for Bronze Globe Valves NPS 1/4 to 2

ASTM F992 
Standard Specification for Valve Label Plates

ASTM F993 
Standard Specification for Valve Locking Devices

ASTM F1020 
Standard Specification for Line-Blind Valves for Marine Applications

ASTM F1030 
Standard Practice for Selection of Valve Operators

ASTM F1098 
Standard Specification for Envelope Dimensions for Butterfly Valves-NPS 2 to 24

ASTM F1271 
Standard Specification for Spill Valves for Use in Marine Tank Liquid Overpressure Protections Applications

ASTM F1370 
Standard Specification for Pressure-Reducing Valves for Water Systems, Shipboard

ASTM F1394 
Standard Test Method for Determination of Particle Contribution from Gas Distribution System Valves

ASTM F1565 
Standard Specification for Pressure-Reducing Valves for Steam Service

ASTM F1792 
Standard Specification for Special Requirements for Valves Used in Gaseous Oxygen Service

ASTM F1793 
Standard Specification for Automatic Shut-Off Valves (Also Known as Excess Flow Valves, EFV) for Air Or Nitrogen Service

ASTM F1794 
Standard Specification for Hand-Operated, Globe-Style Valves for Gas (Except Oxygen Gas), and Hydraulic Systems

ASTM F1795 
Standard Specification for Pressure-Reducing Valves for Air or Nitrogen Systems

ASTM F1802 
Standard Test Method for Performance Testing of Excess Flow Valves

ASTM F1970 
Standard Specification for Special Engineered Fittings, Appurtenances or Valves for use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Systems

ASTM F1985 
Standard Specification for Pneumatic-Operated, Globe-Style, Control Valves

ASTM F2138 
Standard Specification for Excess Flow Valves for Natural Gas Service

ASTM F2215 
Standard Specification for Balls, Bearings, Ferrous and Nonferrous for Use in Bearings, Valves, and Bearing Applications

ASTM F2324 
Standard Test Method for Prerinse Spray Valves


MSS - Valve Standards

MSS SP-6 
Standard finishes for contact faces of pipe flanges of valves and fittings

MSS SP-9 
Spot facing for bronze , iron and steel flanges

MSS SP-25 
Standard marking system for valves, fittings, flanges and unions

MSS SP-42 
Class 150 corrosion resistant gate, globe, angle and check valves with flanged and butt weld ends

MSS SP-54 
Quality standard for steel castings - radiographic inspection method for valves , flange, fittings and other piping components

MSS SP-55: Quality Standard for Steel Castings for Valves, Flanges and Fittings and Other Piping Components 
SP-55 details the visual inspection criteria for castings. This specification is listed as part of the procedure under API 598. NACE MR-0175 Standard Material Requirements for Sulfide Stress Cracking Resistant Metallic Materials For Oilfield Equipment MR-0175 is the "standard" for materials used in "sour" environments such as found in piping systems in many refineries. It lists materials, mechanical properties and heat treatments for metals used in Hydrogen Sulfide bearing hydrocarbon service

MSS SP-60 
Connecting flange joint between tapping sleeves and tapping valves

MSS SP-61 
Hydrostatic testing of steel valves

MSS SP-67 
Butterfly valves

MSS SP-68 
High Pressure Butterfly Valves with Offset Design

MSS SP-70 
Cast iron gate valves , flanged and threaded ends

MSS SP-71 
Cast iron swing check valves, flanged and threaded ends

MSS SP-72 
Ball valves with flanged or butt - welding ends for general service

MSS SP-78 
Cast iron plug valves

MSS SP-80 
Bronze Gate, globe angle and check valves

MSS SP-81 
Stainless Steel Bonnetless, Flanged , Knife Gate Valves

MSS SP-82 
Valves pressure testing methods

MSS SP-84 
Steel valves socket welding and threaded ends

MSS SP-86 
Metric data in standards for valves, flanges and fittings


AWWA - Valve Standards

  • AWWA C500 "Metal-Seated Gate Valves for Water Supply Services
  • AWWA C509 "Resilient Seated Gate Valves for Water Supply Services"
  • **************************************************************************************

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