Dry Gas Seals – Seal gas supply filtration

The filtration system should include five micron (nominal) duplex filters, arranged in parallel with individual isolation valves to allow for on-line element changes. A differential pressure indicator and high DP alarm should also be included for monitoring filter element condition. If seal gas is to be provided from an external source fed by reciprocating compressors, filter elements should be robust enough to withstand pressure pulsations in the system.

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