On installations where neither automatic nor remote actuation is selected, the manually activated Tee Handle can be used. This device is constructed of brass and stainless steel and bolts directly to the top of the Agent Cylinder Valve. The handle is locked in the safety
position by a ring pin, which is pulled out at the time of actuation. The Tee Handle is designed to lock in place only in the FULL OPEN or FULL CLOSED position to discourage
incomplete valve opening in a fire situation. The Tee Handle is also used as a service tool to open the Agent Cylinder Valve during agent cylinder recharging.