Safety valves
A safety valve (or relief valve) is a valve that opens automatically against a weight or a preloaded spring, preventing a dangerous rise of internal pressure in a space (pressure vessel, boiler, pipeline).
It helps prevent undesired operating conditions in pipelines and equipment that would endanger the function and integrity of the pipeline and/or equipment, or the controllability of the process.
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Safety valves – product group overview
The function of safety valves is to provide a bypass at a given pressure through which overpressure can be released from the pipe system/equipment and excess medium can escape.
Depending on the design, they may discharge to atmosphere or into a bypass pipeline.
Connections can be flanged (to EN or ANSI standards) or threaded (G-NPT-BSPT).
Suppliers and product catalogues for this product group
Niezgodka GmbH.
A Hamburg-based family company founded in 1967, currently employing 70 people. Since its foundation it has specialised in manufacturing control and safety valves. Its product range includes relief, safety and overflow valves, control valves, pressure reducers and vent valves for general industry, the food industry and the chemical industry – even tailored to individual requirements.
Curtiss-Wright
A US-based industrial holding company with a wide product range, able to cover almost all of industry's valve requirements. Its subsidiary Farris manufactures safety valves, but to ANSI standards only.
Valvulas National.SA
A Catalan company founded in 1976 and part of the Pekos group. Its portfolio covers safety valves, including large sizes, in carbon steel or stainless steel, in direct-acting or pilot-operated designs.
Supplier product information
- ready-to-install design
- easy operation
- separate relief valves and safety valves available
- certifiable set pressure
Connection: threaded or flanged, as required.
