Abstract: A lever actuated pressure relief valve useful at the base of a gridded sprinkler system to perform three functions. The first function is as a pressure relief valve for the sprinkler system, the second function is a closed position for permitting the pressure testing of the sprinkler system, and the third position is an open position to permit the testing of the alarm system of the sprinkler system. The valve has a spring loaded valve stem which is operated by a lever which may be moved under a covered recess to hold the valve in a closed position. It may be moved to a pressure relief system where the valve is held only by a valve spring. It may also be turned to a third position where the valve is opened.

Abstract: A replacement wrench is provided which has a body formed into a right angle wherein one leg has an elongated socket and the other leg has a somewhat symmetrical socket disposed near one end and has an elongated slot with a slideable stop therein and capable of being locked into any position along the slot.