Kimray 325 FMT PB PO-D

What pressure, flow and temperature is it rated for?

This unit has a maximum working pressure of 300 psig and operates across a setpoint range of 10 to 300 psig. The Cv range is 15.6 to 117 with a Cf of 0.75, which determines flow capacity for your specific application conditions. Temperature rating is not specified in the listing; ask the seller for the material temperature limits and whether a high-temp or low-temp trim is installed.

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

The listing specifies this regulator is designed for gas service, but does not identify which specific gases it has handled or its compatibility beyond that. Oxygen cleaning status is not mentioned. Contact the seller to confirm the previous service fluid, material compatibility with your intended gas, and whether oxygen cleaning has been performed or is available.

What materials are the wetted parts?

The body is cast ductile iron, and the unit features equal percentage trim with Class VI shutoff, but the listing does not specify trim material, seat material, or elastomer type. The NACE MR0175 option is noted as available, which typically involves upgraded metallurgy for sour service. Ask the seller for a complete bill of materials including trim, seat, diaphragm, and seal materials to verify compatibility with your process conditions.

What should I inspect before putting it into service?

On used pneumatic regulators, check the diaphragm for cracks or stiffness, inspect seats and trim for erosion or scoring, verify smooth plug travel without binding, and perform a seat leakage test to confirm the Class VI rating is still met. Check all threaded connections and the body casting for cracks, corrosion, or previous repair welds, particularly if the unit has seen sour gas or high-cycle service. Bench-test across the full setpoint range with clean instrument air to verify stable control and proper shutoff before installation.