Features:* .* Excellent replacement for your old or damaged air compressor check valve.* Three male thread connectors are respectively for connecting pipes, air pressure vessel and compressor piston pump.* 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: Gold * Surface: Nickel Plating * Suitable for: Direct Air Compressor * Male Thread Diameter: 20*20*10mm/ 1/2" x 1/2" x 1/8" -Internal Package Contents: 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.