CNG Gas Dryer - STCNG20-VZ1 Natural Gas Dryers, inlet 150 psi, flow 200-500 scfm

What pressure, flow and temperature is it rated for?

This unit is rated for 150 PSI MAWP at 500°F, with an MDMT of -20°F at 150 PSI. Flow capacity is 200-500 SCFM. CNG dryers in this class typically operate best in the upper half of their flow range where regeneration cycles are more efficient.

What gases is it compatible with, and has it been oxygen cleaned?

This is a natural gas dryer and the listing does not indicate it has been oxygen cleaned or used in oxygen service. Ask the seller for service history and what gas streams it has processed. Equipment used in hydrocarbon service should never be repurposed for oxygen without complete cleaning, material compatibility review, and often re-certification.

What should I inspect before putting it into service?

Inspect the desiccant bed for contamination, channeling, or breakdown—desiccant typically needs replacement every 3-5 years depending on use. Check all pressure relief devices, valve seats on the regeneration system, and verify the Autodew dewpoint monitoring system calibrates correctly. Confirm the CRN D0508.6 registration is current if you're operating in a Canadian jurisdiction that requires it.