This is a Lock & Cancel Valve used in many pneumatically controlled instruments. It turns vacuum operated pneumatics on and off. The opening of the 5/32" elbow on top of the valve allows the vacuum to flow threw the valve to operate pneumatics or cutoff valves that controll instruments. Opening of the other 5/32" elbow (Bottom valve) will stop the flow of vacuum. These units are built with adjustable Wurlitzer type valves.
Note: These valves DO NOT COME WITH THE BASE PICTURED. But are custom made if they are requseted.
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