In Tank Brass Check Valve 3/4" Female NPT x 1" Male NPT Flare Wrench Size Needed For Installation:

Wrench Size Needed For Installation: 1-1/2"

If your compressor does not have an unloader line then this valve can be left not hooked up and the pressure switch will still function properly

This listing is for a brand new B section V belt

5" cast iron pulley/sheave with 5/8" H bushing for B section belt is a high-quality 2-piece pulley that measures 4

Accuracy: 3-2-3% per ANSI grade B

In Tank Brass Check Valve 3/4" Female NPT x 1" Male NPT Flare Wrench Size Needed For Installation:One new 3 4" female NPT x1" male NPT in tank air compressor check valve. This style of check valve is usually screwed directly into the air tank, then the main line coming off the compressor pump is connected to it. This valve prevents back pressure from getting back to the air compressor pump once the compressor is shut off. This valve has a 1 8" female NPT port in the side which usually goes to an unloader valve on your pressure switch or compressor