It is mainly used in the air conditioning system to keep the pressure differential between the supply and backwater pipes to improve the efficiency and safety of the system.
It is easy to install and debug. Once it is set up, automatic control can be achieved. The valve sensor and the complex transmission actuator are eliminated. The maintenance is convenient and the failure is not easy.
The two control pipes of the pilot valve are connected with the high voltage source (water supply) and the low voltage source (back water pipe). When the high and low pressure difference is greater than the set value, the guide valve opens, the main valve opens, and a portion of the high pressure water flows back through the 800X direct flow back to the pipe. ZF800X is automatically closed after the differential pressure is restored.