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Auto bypass valve is a direct acting regulating pipeline fitting designed to automatically maintain a specified pressure differential between the inlet and outlet ports. With an increase in pressure differential relative to the set value, the valve disc automatically opens, and correspondingly closes when the pressure drops.
Pressure relief valves are used to optimize hydraulic regimes in systems with dynamically changing flow rates:
1. A regulator that opens when the set pressure is exceeded, pressure differential regulator, can be used as an analogue of the pressure relief valve with greater pressure maintenance accuracy.
2. If the pressure in the return pipeline is stable, which is typical for heating systems with dependent connection to the heating network, the same effect can be achieved by installing a pressure regulator 'upstream'.
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