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An excess pressure relieving means is illustrated for use with fluid pressure reducing apparatus wherein fluid passes from a high pressure inlet chamber to a reduced pressure outlet chamber and includes a valve member having a relief port carried by a diaphragm which extends across the outlet chamber, a closure member carried by the diaphragm normally closing the fluid relief port, and an operator carried by the closure member engaging a stop which limits movement of the closure member but which permits further movement of the valve member producing a separation of the valve and closure members permitting excess fluid pressure to be dissipated through the relief port.  A safety device for fluid pressure reducing apparatus having a fluid pressure reducing valve,Bellows Seal Valves through which fluid passes from a high pressure inlet chamber to a reduced pressure outlet chamber, operable responsive to a predetermined reduced pressure simulating means, and a diaphragm interposed between said reduced pressure outlet chamber and said predetermined reduced pressure simulating means including: a stop carried at a predetermined position on a side of said diaphragm opposite said fluid pressure reducing valve;Reducing Valves a valve member carried by said diaphragm having a fluid relief port communicating with said reduced pressure outlet chamber; a closure member carried on a side of said diaphragm remote from said reduced pressure simulating means normally in position closing said fluid relief port and actuating said fluid pressure reducing valve responsive to said reduced pressure simulating means;MULTI-FUNCTIONAL WATER PUMP CONTROL VALVE and an operator extending through said diaphragm carried by said closure member in spaced relation with said stop when said closure member is in position closing said fluid relief port which engages said stop restraining said closure member against further movement when said diaphragm and said valve and closure members carried thereby are moved responsive to an excessive pressure in said reduced pressure outlet chamber but permitting further movement of said diaphragm and valve member carried thereby separating said valve member from said movable closure member; whereby said closure member actuates said fluid pressure reducing valve and upon movement of said diaphragm responsive to excessive pressure in said reduced pressure outlet chamber opens said fluid relief port permitting fluid to escape through said fluid relief port relieving such excessive pressure in said reduced pressure outlet chamber. It has been found that a pressure relief valve may be provided for use with pressure reducing apparatus wherein a valve member having a fluid relief port is carried by a diaphragm opposite a closure member also carried by the diaphram normally in position to close the fluid relief port. An operator is carried by the closure member and extends into engagement with a stop when excess pressure occurs so that the stop restrains further movement of the closure member but permits further movement of the valve member carried by the diaphragm causing the valve member to separate therefrom opening the relief port permitting fluid to readily escape therethrough immediately upon the occurrence of excess pressure in the pressure reducing apparatus.

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