Safety valves
- Category: Safety valves
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Spring-loaded safety valves
Optionally (at Customer request) we can group safety valve with Supplementary Loading System, the main tasks of system are: keep the safety relief valve 100% closed and support the lift of the safety relief valve. |
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Double action safety valves
Construction and principe action: The Double Action make design comprise of a spring loaded main valve incorporating a cylinder with a loose fitting piston and a similar relay valve mounted on the main chest. The relay valve is generally set between 2 and 5 psi above the main valve. Immediately pressure at the inlet pipe for example rises above 200 psi the main valve overcomes the main spring loading and opens with a clean action. If the pressure continues to rise and reaches 202 psi the pressure at the relay valve overcomes its spring loading The discharge from the relay valve is directed by port to the underside of the main piston. This action will further compress the main spring thereby giving the main valve full lift discharge.
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