Safety Valves Standards
Reference data and engineering information about safety valves standards for fluid mechanics applications.
safetyvalvesstandards
Overview
Engineering reference data for Safety Valves Standards in fluid mechanics.
Key Formulas
Reynolds Number
Ratio of inertial to viscous forces — determines flow regime.
Bernoulli's Equation
Conservation of energy for steady, inviscid, incompressible flow.
Continuity Equation
Conservation of mass for incompressible flow.
Darcy-Weisbach
Pressure drop due to friction in a pipe.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Reynolds number | — | |
| Fluid density | kg/m³ | |
| Flow velocity | m/s | |
| Characteristic dimension | m | |
| Dynamic viscosity | Pa·s | |
| Pressure | Pa | |
| Darcy friction factor | — |
Safety Valve Standards by Country
19 rows
Country | Standard No. | Description |
|---|---|---|
| Germany | A. D. Merkblatt A2 | Pressure Vessel Equipment safety devices against excess pressure - safety valves |
| Germany | TRD 421 | Technical Equipment for Steam Boilers Safeguards against excessive pressure - safety valves for boilers of groups I, III & IV |
| Germany | 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 & hot water; Part 2 specification for safety valves for compressed air & inert gas; Part 3 specification for safety valves for process fluids |
| France | AFNOR NFE-E 29-411 to 416 | Safety & relief valves |
| France | NFE-E-29-421 | Safety & relief valves |
| Korea | KS B 6216 | Spring loaded safety valves for steam boilers & pressure vessels |
| Japan | JIS B 8210 | Steam boilers & pressure vessels - spring loaded safety valves |
| Australia | SAA AS1271 | Safety valves, other valves, liquid level gauges & other fittings for boilers & unfired pressure vessels |
| USA | ASME I | Boiler applications |
| USA | ASME III | Nuclear applications |
| USA | ASME VIII | Unfired Pressure Vessel Applications |
| USA | ANSI/ASME PTC 25.3 | Safety & Relief Valves - performance test codes |
| USA | API RP 520 | Sizing selection & installation of pressure relieving devices in refineries, Part 1 Design, Part 2 Installation |
| USA | API RP 521 | Guide for pressure relieving & depressurizing systems |
| USA | API STD 526 | Flanged steel pressure relief valves |
| USA | 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 |
Source: engineeringtoolbox.com