Features 1、Works perfectly in preventing the reverse oil flow and the reverse flow of compressed air. 2、The air compressor check valve ensures a uniform force, non‑slipping installation, and protect the machine from explosion. 3、The 3-way check valve has great hardness, so it's not easy to transform, and promises a safer working as well. 4、Adopting high quality brass, the valve possess excellent durability for repeated and long-term use. 5、Enables wide application, this check valve can be used in air compressor, hydraulic system, pneumatic system, etc. Specification Item Type: Air Compressor Check Valve Product Material: Brass Model: 1/2 x 3/8 x 10 Application: Air Compressor Thread Size: G1/2 x M3/8 x M10 Function: Used in hydraulic systems to prevent reverse oil flow, or used in pneumatic systems to prevent reverse flow of compressed air. Package List 1 x Air Compressor Check Valve