I. International Standards
(1) ISO Standards
ISO 5208: Industrial valves - Pressure testing (seal/strength methods)
ISO 5752: Face-to-face dimensions for flanged valves
ISO 10434: Bolted bonnet steel gate valves for petroleum/natural gas industries
ISO 14313: Pipeline valves for oil/gas transportation
(2) API Standards (Petrochemical Focus)
| Standard | Application |
|---|---|
| API 600 | Steel gate valves (bolted bonnet) |
| API 602 | Compact steel gate valves (small bore) |
| API 603 | Corrosion-resistant flanged gate valves |
| API 608 | Metal ball valves (flanged/threaded/welded) |
| API 609 | Butterfly valves (lug/wafer type) |
| API 6D | Pipeline valves (transmission systems) |
| API 598 | Valve inspection/testing (applies to API 600/602/etc.) |
(3) ASME Standards
B16.10: Valve face-to-face dimensions
B16.34: Valve pressure-temperature ratings
B16.5: Pipe flanges (includes valve flange standards)
II. European Standards (EN)
EN 593: Industrial metal butterfly valves
EN 1171: Industrial cast iron gate valves
EN 12266: Pressure testing (equivalent to ISO 5208)
EN 12516: Shell strength calculation
EN 1984: Industrial steel gate valves
III. Chinese Standards
(1) GB (National Standards)
GB/T 12221: Valve face-to-face dimensions
GB/T 12234: Steel gate valves (equivalent to API 600)
GB/T 12237: Steel ball valves (aligned with API 608)
GB/T 26480: Valve inspection/testing
(2) JB (Industry Standards)
JB/T 8527: Metal-sealed butterfly valves
JB/T 7746: Compact steel gate valves (similar to API 602)
IV. Special Industry Standards
(1) Nuclear Valves
RCC-M (French PWR standards)
ASME III (US nuclear valve standards)
GB/T 19624: Nuclear power plant valve specifications
(2) Marine Valves
GB/T 584: Ship cast iron flanged valves
CB/T 4196: Ship cast steel valves
(3) Fire Protection Valves
GB 5135.6: Fire sprinkler system valves
UL/FM: US fire valve certifications
V. Material Standards
| Standard | Material |
|---|---|
| ASTM A216 | Carbon steel (WCB/WCC) |
| ASTM A351 | Austenitic stainless steel (CF8/CF8M) |
| GB/T 12225 | Copper alloy casting specs |
VI. Testing & Certifications
Pressure Test: ISO 5208 / API 598 / GB/T 26480
Fire Test: API 607/6FA (fire-safe valves)
Cryogenic Test: BS 6364 (low-temperature valves)
CE Marking (EU compliance)
SIL Certification (safety instrumented systems)
