Valves
TYPE: Gate Valve / Globe Valve/ Ball Valve / Plug Valve / Butterfly Valve / Check Valve / Bellows sealed Valve / Pressure seal Valve / Breather Valve / ORBIT Valve / ARV or ARC ValvPressure Relief Valve /Rupture Disks / Control Valve
RATINGS: 150 | 300 | 600 | 900 | 1500 | 2500
MATERIALS AND SPECIFICATIONS: ASTM A216 Grade WCB / Low Temp Carbon Steel ASTM A352 Grade LCB / Low Temp Carbon Steel ASTM A352 Grade LC1 / Low Temp Carbon Steel ASTM A352 Grade LC2 / 3.1/2% Nickel Steel ASTM Grade LC3 A352 / 1.1/4% Chrome 1/2% Moly Steel ASTM A217 Grade WC6 / 2.1/4% Chrome ASTM A217 Grade C9 / 5% Chrome 1/2% Moly ASTM A217 Grade C5 / 9% Chrome1% Moly ASTM A217
Grade C12 / 12% Chrome Steel ASTM A487 Grade CA6NM / 12% Chrome ASTM A217 Grade CA15 / 316SS ASTM A351 Grade CF8M / 347SS ASTM 351 Grade CF8C / 304SS ASTM A351 Grade CF8 / 304L SS ASTM A351 Grade CF3 / 316L SS ASTM A351 Grade CF3M / Alloy-20 ASTM A351 Grade CN7M / Monel ASTM 743 Grade M3-35-1 / Hastelloy B ASTM A743 Grade N-12M / Hastelloy C ASTM A743 Grade CW-12M / Inconel ASTM A743 Grade CY-40 / Bronze ASTM B62
| API 600 | Steel Valves – Flanged & Buttwelding Ends |
| API 600 is the primary steel gate valve purchase specification. Valve design and construction criteria are detailed, as well as materials and trim designations. An appendix contains information pertaining to pressure seal valves. ISO Standard 10434 is essentially the same as API 600, only published in the ISO format. | |
| API 602 | Compact Steel Gate Valves- Flanged, Threaded, Welding and Extended-Body Ends |
| API 602 is the 4″ & smaller forged steel gate valve purchase specification. Valve design and construction criteria are detailed, as well as materials and trim designations. Future versions of this document are expected to include requirements for bellows seal gate valves. | |
| API 603 | Class 150, Cast, Corrosion-Resistant, Flanged-End Gate Valves |
| API 603 covers light walled gate valves in sizes NPS 1/2″ through 24″, in classes 150, 300 & 600. These valves are used in applications where the thicker API 600 casting is not needed. | |
| 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, Lug-Type and Wafer Type |
| API 609 is the purchase specification for butterfly valves with lug-type and wafer-type configurations designed for installation between ANSI B16 flanges, through Class 600. | |
| API 598 | Valve Inspection & Testing |
| API 598 covers the testing and inspection requirements for gate, globe, check, ball, plug & butterfly valves. Steel valve pressure ratings found in ASME/ANSI B16.34 are required to determine API 598 test pressures for steel valves. | |
| API 6D | Specification for Pipeline Valves (Gate, Plug, Ball and Check Valves) |
| Specification for Pipeline Valves (Gate, Plug, Ball and Check Valves) | |
| API 6D is the primary standard for valves used in pipeline service, including gate, plug, ball and check valves. Occasionally refinery and petrochemical purchasers will reference the more stringent testing requirements of 6D although the valve may have built under API 600, 602, 608 or 609 design criteria. | |
| 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 B16.10 | 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. | |
| 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. | |