One brand new air compressor 3/4" male NPT pipe thread x 1/2" Compression thread in tank check valve. The 3/4" male NPT side is usually used to screw into the air tank and the 1/2" compression side is the inlet for the incoming air coming from the compressor pump.

• -Total Length Of The Valve: 3"
• -Male Pipe Thread Size Used To Screw Into Air Tank: 3/4" Male NPT
• -Compressor Line Input Threads: 1/2" Compression Thread
• -Unloader Line Input Threads: 1/8" Female NPT
• -Wrench Size Needed For Installation: 1"

-Total Length Of The Valve: 3"imported