1/4" M to 1/4" F Check Valve, NPT
This combination does not exist.
Check valves allow air flow in a single direction and prevent air flow from the opposite direction. This check valve is an 1/4" NPT (M) to 1/4" NPT (F). Recommended torque for 1/4" and 3/8" is 16 ~ 18 ft. lbs.