To provide a relief valve having a simple configuration and capable of smoothly opening and closing a valve.
The relief valve includes a valve element 100 having a passage hole 110 formed therein for passing fluid, a stem 200 opening and closing the passage hole 110 of the valve element 100, a spring member 800 activating the stem 200 toward an outflow side, and a diaphragm 400 penetrated with the stem 200 for activating the stem 200 toward an inflow side. A through hole 240 is formed in a longitudinal direction in the stem 200, and a space 130 where the fluid is retained is disposed behind the diaphragm 400. A part of the fluid passing through the passage hole 110 of the valve element 100 flows after passing through the through hole 240 of the stem 200 into the space 130, and the pressure of the fluid acts on the diaphragm 400.
WO/1998/008012 | OUTLET PRESSURE LIMITING VALVE |
NISHI YUYA
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