3" Pneumatic Control Valve – Female NPT | Cast Ductile Body | Equal Percentage Trim | Class VI Shutoff

What pressure, flow and temperature is it rated for?

This valve is rated for a maximum working pressure of 300 PSIG with a set point pressure range of 10–300 PSIG. The flow coefficient (Cv) ranges from 15.6 minimum to 117 maximum, with a Cf of 0.75. Temperature rating is not provided in the listing; ask the seller for the maximum service temperature and whether elastomer or metal seat configuration is installed, as this typically determines thermal limits on Kimray control valves.

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

The listing specifies this valve is designed for gas service and notes that a NACE MR0175 option is available for sour gas or corrosive environments, though it does not confirm whether this particular unit includes that option. There is no indication this valve has been oxygen cleaned or is suitable for oxygen service without proper cleaning and component verification. For oxygen, hydrogen, or other reactive gas applications, confirm with the seller what the valve previously handled and whether oxygen-compatible materials and cleaning are required.

What materials are the wetted parts?

The body material is cast ductile iron. The listing does not specify materials for the trim, seat, diaphragm, or other internal wetted components. Ask the seller for a complete materials list including seat type (elastomer or metal), stem material, and actuator diaphragm material, as these vary by service and affect compatibility with your process fluid.

What should I inspect before putting it into service?

Inspect the seat and plug for wear, scoring, or damage that could compromise the Class VI shutoff rating; bench test shutoff integrity if critical. Check the diaphragm in the actuator for cracks, stiffness, or deterioration, and verify smooth stem travel without binding across the full stroke. Confirm all NPT threads are undamaged, verify the vent pilot operates correctly, and stroke the valve through its range while monitoring for consistent response and proper spring return.