It is the hand valve. If you want to buy, please contact me for free.

Features:

The source of pressure can completely shut off by simply turning the knob.

Three-way directional control configuration releases the residual internal pressure on the output side when manually closed.

Idea for inspercting or repairing any devices without compromising the safety.

Directionality of airflow may be selected from the tubing or threaded input side to the tubing or threaded output side.