Common faults that occur in the use of pressure relief valves

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Pressure relief valves are primarily used in pipelines for systems that supply steam, gas, water, and oil. Their main function is to automatically reduce pressure and maintain a certain pressure level at the outlet of the pipeline. The main types of pressure reducing valve products include: insulated ones, stainless steel versions, throttle-type pressure reducing valves, pilot piston-type steam pressure reducing valves with internal thread connections, instrumentation pressure reducing valves, primary pressure reducing valves, liquefied gas pressure reducing valves, oxygen-specific pressure reducing valves, hydraulic pressure reducing valves, liquid chlorine pressure reducing valves, liquid nitrogen pressure reducing valves, air filtration pressure reducing valves, air pressure reducing valves, general gas pressure reducing valves, water-use pressure reducing valves, steam pressure reducing valves, natural gas pressure reducing valves, stainless steel pressure reducing valves, piston-type pressure reducing valves, diaphragm-type pressure reducing valves, and more. There are generally four common faults that occur in pressure relief valves during use: the outlet pressure of the valve is almost equal to the inlet pressure, with no pressure reduction being the most frequent issue. Fault symptom 1: The pressures at the inlet and outlet of the pressure reducing valve are nearly equal, and the outlet pressure does not change as the pressure adjustment knob is turned. Fault symptom 2: The outlet pressure is very low; even after tightening the pressure adjustment knob, the pressure does not increase ； Fault symptom 3: Unstable pressure, large pressure fluctuations, and sometimes high noise. Fault symptom 4: The pressure at the oil outlet increases on its own after the operating pressure is set