Safety Valve Standards
An survey of international safety valve standards. The most common used standards in Germany, UK, USA, France, Japan, Australia and Europe
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| Country | Standard No. | Description |
| Germany | A. D. Merkblatt A2 | Pressure Vessel Equipment safety devices against excess pressure - safety valves |
| TRD 421 | Technical Equipment for Steam Boilers Safeguards against excessive pressure - safety valves for boilers of groups I, III & IV | |
| TRD 721 | Technical Equipment for Steam Boilers Safeguards against excessive pressure- safety valves for steam boilers group II | |
| United Kingdom, UK | BS 6759 | Part 1 specification for safety valves for steam and hot water Part 2 specification for safety valves for compressed air and inert gas Part 3 specification for safety valves for process fluids |
| France | AFNOR NFE-E 29-411 to 416 |
Safety and relief valves |
| NFE-E-29-421 | Safety and relief valves | |
| Korea | KS B 6216 | Spring loaded safety valves for steam boilers and pressure vessels |
| Japan | JIS B 8210 | Steam boilers and pressure vessels - spring loaded safety valves |
| Australia | SAA AS1271 | Safety valves, other valves, liquid level gauges and other fittings for boilers and unfired pressure vessels |
| USA | ASME I | Boiler applications |
| ASME III | Nuclear applications | |
| ASME VIII | Unfired Pressure Vessel Applications | |
| ANSI/ASME PTC 25.3 | Safety and Relief Valves - performance test codes | |
| API RP 520 | Sizing selection and installation of pressure relieving devices in refineries, Part 1 Design, Part 2 Installation | |
| API RP 521 | Guide for pressure relieving and depressurizing systems | |
| API STD 526 | Flanged steel pressure relief valves | |
| API STD 527 | Seat tightness of pressure relief valves | |
| Europe | EN ISO 4126 | Safety devices for protection against excessive pressure |
| International | ISO 4126 | Safety valves - general requirements |
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