3/8" female NPT x 1/2" 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 flow or tank 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 pump. If you do not use an unloader in your application you can just plug this port.

3/8" Female x 1/2" Male NPT Brass Air Compressor In Tank Check Valve USA
Item Description

3/8" female NPT x 1/2" 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 flow or tank 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 pump. If you do not use an unloader in your application you can just plug this port.

Features & Specifications:

• Valve Inlet Threads: 3/8" Female NPT (measure about 9/16" inside diameter)
• Outlet Threads / Tank Threads: 1/2" Male NPT (measure about 10/32" inside diameter)
• Side Port: 1/8" Female NPT (measures about 10/32" inside diameter)
• Total Length: 2-3/4"

About Us

Welcome to Compressor Source.

Founded in 1979 in Lincoln, Nebraska, our business has over 45 years of experience in the air compressor industry. Compressor Source was launched in 2008 to bring our trusted knowledge and customer service online.

We specialize in air compressors, compressor parts, and accessories, offering a wide selection of OEM and universal components for both professional and DIY applications. Our team is committed to fast shipping, U.S.-based customer support, and reliable products you can count on.

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