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Pressure relief valve is
installed on the outlet pipe of water supply pipeline. It can maintain safe water supply pressure inside the pipe and prevent pipeline and equipment damage caused by accidental escalation in water pressure. When water pump stops functioning or pipeline gate suddenly closes, abnormal pressure forms inside the pipe. As the pressure gets over a certain safety limit, pressure relief valve can open automatically and releases the water pressure above the safety limit, so as to ensure the safety of pipeline and equipment. When the pressure turns back within the safety limit, the pressure relief will close slowly. Utilization State of Pressure Relief Valve When water pressure inside the pipeline becomes greater than the specified outlet pressure, the pressure relief pilot valve opens and simultaneously releases the pressure in the pressure chamber. At this time, the main valve gate is pushed open and keeps the main valve in open state. When the pressure returns to the safety limit, the pilot valve closes simultaneously, pressure chamber in main valve recovers pressure accumulation state, and main valve can be closed slowly. In this way the pressure inside the pipeline can be maintained. Pressure Adjusting Range 0.2kgf/cm2¡ã4kgf/cm2 3kgf/cm2¡ã7kgf/cm2 Special orders can be arranged for higher pressure adjustment range. ¡EIn the case of high pressure, valve body made by stainless steel is recommended. | |
Curves for
Released flow by Pressure Relief Valve
1000 10000 20000 30000L/MIN Flow rater-water Special order is needed for size over 14" or particular dimension. Please refer to Pressure Sustaining Valve for valve body material, working pressure and flow. |