Features 1、The check valve has high hardness, not easy to be deformed or damaged, and has a high safety factor. 2、High‑quality materials, sturdy and durable to use, reusable, and long service life. 3、Uniform force, no slipping during installation, explosion‑proof and compression‑resistant. 4、Wide range of uses, easy installation and replacement, suitable for air compressors, etc. 5、Used to prevent reverse flow of oil in hydraulic systems, or prevent reverse flow of compressed air in pneumatic systems. Specification Item Type: Check Valve Product Alias: Non-return Valve Material: Brass Thread Size: 1/2x3/8 Scope of Application: Air pump accessories, Silent oil-free air compressor Purpose: Used to prevent reverse flow of oil in hydraulic systems, or prevent reverse flow of compressed air in pneumatic systems Package List 1 x Check Valve