Safety valve after metering pump
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Does anyone know what kind of safety valve is best to use after the metering pump? Is it better to use a 90-degree spring or a straight-through one with a diaphragm? Thank you
Generally, the straight-through type is used, and the set pressure should be 1.2 times the working pressure. The safety valve can be equipped by the pump manufacturer.
Generally, a die is used, and the die is pressed against the valve seat by an internal spring. When the pressure in the pipeline exceeds the preset pressure, the diaphragm is lifted and the flow returns to the container or metering pump suction pipe. ； The pressure can be set by adjusting the screw (within the range of 0-1.0Mpa) ； The valve relief pressure should be set about 0.1Mpa higher than the system pressure. ； Installation should be close to the outlet of the pump. There should be no valves between the valve and the pump.