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Spring loaded vs. Pilot operated safety valve

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Thread Starter

Anonymous

Hi,

Can anybody tell what is the application difference between pilot operated & spring loaded Safety valves?
 
N

Nik Kinze

In a nutshell without going into too much detail, a pilot operated valve uses pressure from the process to operate the valve. In the event that the system pressure fails, the valve should shut, but, in some cases the valve my or may not close properly.

A spring operated safety valve must be opened by an operator. (solenoid, pilot pressure, etc.) The difference is that if power is lost or pressure drops the valve always returns to its safe position. I hope this helps.
 
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Anonymous

Thanx for your prompt reply. I appreciate it. Can you please help in guiding application-wise use of pilot operated & spring loaded safety valves? Are there seperate standards for both?
 
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