Brand new 3/4" Female NPT in-line air compressor check valve. This check valve features a 1/8" female NPT port on the side to go to an unloader valve if needed. It is a universal inline check valve with female NPT threads on each end. The valve prevents backflow or tank pressure from getting back into the air compressor pump once the compressor is shut off. The 1/8" unloader port on the side of the valve is used to relieve pressure from the pump once it has shut off.
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