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In CPI bellows are used in PSVs preventing PSV body & downstream piping from corrosive process fluids in severe applications. These bellows over a period of time have got punctured causing corrosion problems in case PSVs starts passing. Our OEM has indicaed that these models Of PSVs have become obsolete & spares are not available. Now we are in the process of purchasing these bellows from third parties. Is there any standard / specification available for bellows(eg Specifying the no. of cycles)? Thanks in advance..
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Psv Bellows
Started by ASH25320, Nov 16 2006 05:27 AM
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pleckner
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Posted 16 November 2006 - 06:35 AM
Are you talking abouit Pressure Safety Valves?
In the area of process safety, a bellows PSV usually refers to the type of relief valve that is less dependent on built up or variable back pressure; therefore your description confuses me. Please clarify who is the manufacturer and the model number you have.
In the area of process safety, a bellows PSV usually refers to the type of relief valve that is less dependent on built up or variable back pressure; therefore your description confuses me. Please clarify who is the manufacturer and the model number you have.
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