Leakage of spring safety valve

Under normal working pressure of the equipment, there is leakage exceeding the allowable level between the spring safety valve disc and the sealing surface of the valve seat. The reason is that there is dirt between the sealing surface of the valve disc and valve seat. You can use a lifting wrench to open the valve several times to flush away the dirt; Damaged sealing surface. Repairs should be made by grinding or grinding after turning based on the degree of damage; The valve stem is bent, tilted, or the lever is misaligned with the fulcrum, causing the valve core to be misaligned with the valve disc. Should be reassembled or replaced; The elasticity of the spring decreases or loses its elasticity. Measures such as replacing the spring and readjusting the opening pressure should be taken.

The frequency jump or vibration of spring safety valves

Mainly due to the high spring stiffness. Springs with appropriate stiffness should be used instead; Improper adjustment of the adjustment ring results in excessively high reseating pressure. The position of the adjustment ring should be readjusted; The discharge pipeline has excessive resistance, resulting in excessive discharge back pressure. The resistance of the discharge pipeline should be reduced.

The spring safety valve does not open when it reaches the specified pressure

The reason for this situation is inaccurate constant pressure. The compression amount of the spring or the position of the heavy hammer should be readjusted; The valve disc adheres to the valve seat. Regular manual air release or water discharge tests should be conducted on the safety valve; The lever of the lever type safety valve is stuck or the heavy hammer is moved. The position of the heavy hammer should be readjusted and the lever should move freely.