Item Type: Check Valve_x000D_ Material: Iron_x000D_ Interface Size: Approx. 3/4 Inch x 3/4 Inchx10mm_x000D_ Threaded Hole: 26 Coarse Teeth x 26 Coarse Teeth x 9mm_x000D_ Scope of Application: Suitable for Air Compressors, etc. 1Made of high quality iron metal, it is durable, high performance, and can be used for a long time. 2Small resistance, good sealing performance, reliable performance, easy installation. 3Check valve is suitable for air compressors, etc. The applicable medium is air, which is easy to use. 4Check valve cast iron unidirectional piston type three way air compressors accessories. 5Check valve is used where the airflow is not allowed to move in the opposite direction.1 x Check Valve