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- Specifications of booster pump relay -Product name: booster pump relay (water pump relay, self-disconnecting relay) - Voltage: 110V ~ 220V-Frequency: 60Hz Maximum pressure: 1Mpa (10 bar) Installation: behind the pump - Condition: in stock - Structure of booster pump relay, water pump relay The booster pump relay has a circular cylinder consisting of 4 main parts: - Electric magnet - Iron core - Springs - Contacts 3. Application and role of booster pump relay The booster pump relay, also known as the water pump relay, is used to detect the increase or decrease of pressure in the system with automatic nozzles, water supply systems... In addition, the self-disconnecting relay is also used in the civil pump system, the principle of operation based on the pressure in the pipe generated by the pump and the pressure of the user installed on the relay to pump to stop. On request, that is, when using the pump water will work and when closed valve does not use the pump will stop. Water pump relays in current turbochargers are widely used to help solve the problem of weak water, increase pressure for washing machines, showers, water heaters...