Features: Excellent replacement for the old or broken check valve of your air compressor. The three male thread connectors are designed for tube connecting, air pressure tanks, and compressor piston pump. High-quality air compressor replacement for old or damaged check valve. Easy to install with threaded connections. Offers compressive strength, corrosion resistance, high performance, and reliable operation. Specifications: Material: Brass/Zinc Alloy Zinc-Air Compressor Check Valve Male Thread Size: Approx. 20x19x10mm Zinc-Air Compressor Check Valve DN: 52mm Zinc-Air Compressor Check Valve PN: 0.84MPa Brass Air Compressor Check Valve Male Thread Size: Approx. 20x19x10mm Brass Air Compressor Check Valve DN: DN3/2mm Brass Air Compressor Check Valve PN: 0.83MPa Brass Air Compressor Check Valve Heat Sink Male Thread Size: Approx. 20x20x10mm Brass Air Compressor Check Valve Heat Sink DN: DN1mm Brass Air Compressor Check Valve Heat Sink PN: 0.79MPa Note: Please allow 1-2cm errors due to manual measurement. Ensure you are comfortable with this before ordering. Due to differences in monitor displays, the image may not reflect the actual color of the item. Package includes: 1 x Air Compressor Check Valve