This is a HIGH QUALITY bead breaker quick relief valve found on many CEMB tire changers. It is found at the air inlet port of the cylinder and allows the air cylinder to energize and release pressure when moving in and out.
2 Cemb Tire Changer Nylon Insert Rim Protector for Metal Mount Duck Head 3006689
For Tire Changer Cylinders Tire Changer Quick Release Pneumatic Cylinder Valve
Stable Characteristics And High Reliability Tire Changer Quick Relief Valve
HOFFMAN 3005320 Tire Changer Quick Relief Valve Bead Breaker Release Dump valve
HOFMANN 3005320 Tire Changer Quick Relief Valve Bead Breaker Reliese Dump valve
Tire Changer Quick Relief Valve Bead Breaker Release Dump valve Fits, Coats®*