Features:* An excellent replacement for your old or damaged air compressor check valve.* Four male thread connectors are respectively for connecting pipes, air pressure vessel, solenoid valve and compressor piston pumps.* Compressive strength, corrosion resistance, high efficiency and high reliability.* Convenient to install with thread connection ends. Specifications:* Product Name: Air Compressor Check Valve * Material: Brass * Color: As the picture shown * Surface: Nickel plating * Suitable for: oil-free air compressor * Male thread diameter: 20x16x16x10mmPackage Included:1 x Air Compressor Check ValveNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.