140 PSI Pall Filter Housing Skid

What is the MAWP and capacity at service pressure?

The maximum allowable working pressure is 140 PSIG at temperatures from 32 to 149°F. The relief valve capacity is 2,499 SCFM at its 150 PSI set pressure, but the listing does not provide flow capacity curves for the filter housings themselves at operating pressure. Actual throughput will depend on the filter media installed, differential pressure limits, and whether you're running single or dual flow—ask the seller for original design flow rates or nameplate data.

What is the requalification or inspection status?

The listing does not provide any requalification, hydrostatic test, or inspection records. Filter housings operating above 15 PSIG are typically subject to in-service inspection per ASME PCC-2 or your jurisdiction's pressure equipment regulations, though intervals vary widely by location and original code of construction. Request documentation of the last pressure test, inspection reports, and any repairs or modifications before purchasing.

What should I inspect before putting it into service?

Inspect all housing body welds, nozzle connections, and closure mechanisms for corrosion, cracking, or deformation, particularly if the unit saw corrosive gas service. Verify the relief valve has a current test tag and consider factory recertification since set pressure and capacity are critical on a 140 PSI system. Check that all gasket seating surfaces are undamaged, confirm threaded closures are not galled or stripped, and ask the seller what gas or process stream the filters handled to assess material compatibility with your service.