Circulating water line safety valve
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What is the purpose of installing safety valves on the return lines of many circulating water or chilled water systems? Please, kind sir, help me
It is intended to prevent excessive pressure at the suction side; after the medium is pressurized by the water pump, the pressure in the outlet pipeline exceeds the designed pressure.
First of all, the poster is talking about installing a safety valve on the return pipe. Circulating water is typically used as a cooling medium in heat exchangers, which can lead to an excessively high temperature at the outlet of the circulating water. The expansion of this medium may cause overpressure, hence it is necessary to install safety valves.
Are there safety valves on the return lines of the circulating water system or the chilled water system? I haven’t seen any in the heat exchangers in my installation
The purpose of a safety valve is certainly to protect the pipelines and related equipment such as water pumps in case the pressure in the pipelines exceeds the safe level; this is also useful in situations where frozen water causes blockages accidentally