1. Wide compatibility for air compressors This 3-way check valve is compatible with G1/2 x 3/8 x 10 mm and 20 x 16 x 10 mm thread dimensions, suitable for small piston air pumps and oil-lubricated piston air compressors. It ensures a secure connection between pipes, compressed air reservoirs, and piston pumps. 2. Easy installation for efficient use Precisely manufactured male thread connections allow quick and easy installation of the check valve. Ideal replacement parts for compressed air systems, enabling fast setup and reducing maintenance time. 3. High-quality brass material for durability Constructed from durable brass, the air compressor check valve offers excellent pressure resistance, reliability, and long-term performance. Resistant to wear and corrosion, ensuring extended service life. 4. Optimized performance and functionality The check valve effectively prevents backflow in pneumatic systems, ensuring consistent and reliable operation. The removable design simplifies cleaning and maintenance, helping to extend the valve's lifespan.