The 700X water pump control valve consists of a main valve, solenoid guide valve, needle valve, ball valve, check valve, travel switch, micro filter, and pressure gauge to form a hydraulic control connection system. When the water pump needs to stop working, first press the main valve to close 90%, and then the water pump stops running. The remaining 10% will be closed by the return water. Can prevent water hammer phenomenon from occurring. Its working principle is: when the working valve of the water pump supplies water to the downstream, the electromagnetic pilot valve is fully opened, the needle valve is adjusted to the appropriate opening, and the upstream water enters the main valve control room through the needle valve and one-way valve, and flows out through the electromagnetic pilot valve. At this time, the pressure in the main valve control room maintains the main valve at the appropriate opening, ensuring normal water supply to the downstream. When the water pump stops working, the solenoid valve closes first, the main valve control room stops draining, the pressure in the control room increases, and the main valve begins to close. When it is closed to 90%, the upper stroke switch of the main valve outputs a pump stop signal, and the water pump stops running. At this time, the downstream return water enters the main valve control room through the one-way valve, and the pressure in the control room increases, causing the main valve to be closed.

When the working valve of the 700X water pump control valve supplies water to the downstream, the electromagnetic pilot valve is fully opened and the needle valve is adjusted to the appropriate opening. The upstream water enters the main valve control room through the needle valve and one-way valve, and flows out through the electromagnetic pilot valve. At this time, the pressure in the main valve control room is maintained at the appropriate opening of the main valve, ensuring normal downstream water supply. When the water pump stops working, the solenoid valve closes first, the main valve control room stops draining, the pressure in the control room increases, and the main valve begins to close. When it is closed to 90%, the upper stroke switch of the main valve outputs a pump stop signal, and the water pump stops running. At this time, the downstream return water enters the main valve control room through the one-way valve, and the pressure in the control room increases, causing the main valve to be closed.

The 700X water pump control valve is controlled by an electromagnetic pilot valve, without the need for other devices or energy sources. Energy saving, easy maintenance, smooth pump shutdown. The solenoid valve can use AC 220V or DC 24V. The 700X water pump control valve is widely used in water supply network systems such as high-rise buildings, living areas, and urban water supply projects.

The working pressure of the 700X water pump control valve is divided into six types: 1.0MPa, 1.6MPa, 2.5MPa, 4.0MPa, 6.4MPa, and 10.0MPa. The operating pressure is greater than or equal to 0.03MPa, the medium temperature is between 0-80 ℃, and the slow closing time can be adjusted within 3-120s. The pressure loss at a pipeline flow rate of 2m/s is less than 0.01MPa, and the peak water hammer is less than 1.5 times the working pressure. The nominal diameter is DN50-DNl400. The pressure temperature rating of the 700X water pump control valve is determined by the pressure temperature rating of the shell, internal components, and control pipe system materials. The maximum allowable working pressure of the water pump control valve (700X) at a certain temperature is the smaller of the maximum allowable working pressure values of the shell, internal components, and control pipe system materials at that temperature.