How to choose a pressure relief valve
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How should a steam pressure reducing valve be selected? The pressure reduction parameters are as follows: the steam pressure before reduction is 2.25 Mpa, and the steam pressure after reduction is 0.9 Mpa. I checked the valve design manuals for industrial applications, and none of the valves listed indicated the pressures before and after the valve. When selecting a valve, it’s necessary to know the pressure regulation range of the pressure regulator, right?
First, determine the type of pressure reducing valve and the required pressure regulation accuracy, and then select its diameter based on the desired maximum output flow rate. When determining the air supply pressure for the valve, it should be set to 0.1 MPa higher than the maximum output pressure. The pressure relief valve is generally installed after the water and air separator, and before the oil mister or regulator; make sure not to reverse its inlet and outlet connections ； When the valve is not in use, the knob should be loosened to prevent the diaphragm from being constantly under pressure and deformed, which could affect its performance.
First, determine the type of pressure reducing valve and the required pressure regulation accuracy, and then select its diameter based on the desired maximum output flow rate. When determining the air supply pressure for the valve, it should be set to 0.1 MPa higher than the maximum output pressure. The pressure relief valve is generally installed after the water and air separator, and before the oil mister or regulator; make sure not to reverse its inlet and outlet connections ； When the valve is not in use, the knob should be loosened to prevent the diaphragm from being constantly under pressure and deformed, which could affect its performance.