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Let me share some common questions about pressure relief valves.

Jan 25,2024

A pressure reducing valve is a commonly used fluid control component that can reduce high-pressure fluids to the required pressure range. However, some common problems may be encountered during the use of pressure reducing valves. Below are some common pressure reducing valve problems and their solutions.

Pressure reducing valve does not reduce pressure If it is found that the pressure reducing valve cannot reduce the pressure to the required range, it may be due to the following reasons:
Severe wear and tear of the valve core or valve seat, resulting in poor sealing;
Spring failure or breakage;
Channel blockage or foreign object stuck. Solutions: Check the wear and tear of the valve core and valve seat. If the wear and tear is severe, replace the valve core and valve seat with new ones; check if the spring is intact. If the spring fails or breaks, replace it with a new spring; check if the channel is unobstructed. If there is a foreign object stuck, remove the foreign object.
Large pressure fluctuation of pressure reducing valve If it is found that the pressure fluctuation of the pressure reducing valve is relatively large, it may be due to the following reasons:
Pipeline vibration or external interference;
Unstable fluid or containing a large number of bubbles;
Insufficient spring stiffness or improper adjustment. Solutions: Check whether the pipeline is stable. If the pipeline vibrates greatly, measures should be taken to reduce vibration; check whether the fluid is stable. If the fluid is unstable or contains a large number of bubbles, measures should be taken to stabilize the fluid or remove the bubbles; check whether the spring stiffness is appropriate. If the spring stiffness is insufficient or the adjustment is improper, replace the spring with a new one or readjust it.
Pressure reducing valve leaks If it is found that the pressure reducing valve leaks, it may be due to the following reasons:
Aging or damage of the sealing gasket;
Loose or damaged pipeline connections;
Excessive pressure causing seal failure. Solutions: Check whether the sealing gasket is intact. If the gasket is aged or damaged, replace it with a new gasket; check whether the pipeline connections are firm. If the connections are loose or damaged, retighten them or replace the damaged connections; check whether the maximum working pressure of the pressure reducing valve is appropriate. If the pressure is too high, readjust the maximum working pressure.