2 PCS Spring Check Valve Long Service Life Check Valve Core Oil Return Valve for Oil Free Machine359

Feature: 1. Manufactured by new technology, it can be used for a longer time compared with similar check valve spool. 2. For replace old or damaged check valve core of air compressors, it is an excellent substitute 3. Cylinder heads of oil‑free machines and air compressors can equip with the spring check valve. 4. With high quality material of plastic, it is durable, safe and has a long service life. 5. Check valves are mechanical valves that permit liquids to flow in only one direction, preventing process flow from reversing. Specification: Item Type: Spring Spool Material: Plastic Plastic Plug Diameter: Approx. 23mm 25mm 27mm 35mm 0.9in 1in 1.1in 1.4in Plastic Plug Height: Approx. 12mm 20mm 21mm 30mm 0.5in 0.8in 0.83in 1.2in. Package List: 2 x Plastic Plug2 x Spring Note: Before replacing the spool, make sure that the compressors are completely closed and the pressure is completely relieved.