Solid brass in line compressed air check valve. This check valve features a 1/8" male NPT thread as well as a 1/8" female NPT thread. This is a directional flow check valve with an arrow on the side showing which way the air needs to flow. This is a high quality solid brass check valve that is rated up to 500 PSI and has a crack pressure of 1 PSI. That means that this check valve will operate in any application between 1 and 500 PSI.
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