Auxiliary Valve in Fire Engine
https://youtu.be/k5tjcsMTe00 There are two air actuated quarter turn full flow bronze ball valves (FOAM TANK-TO-PUMP and FOAM FILL) provided to facilitate operation of the auxiliary foam inlet and outlet.
https://youtu.be/k5tjcsMTe00 There are two air actuated quarter turn full flow bronze ball valves (FOAM TANK-TO-PUMP and FOAM FILL) provided to facilitate operation of the auxiliary foam inlet and outlet.