Supply LH45-16 type flow limiting check valve-Hebei Jinke Tongli professionally builds

材质：

铸铁

型号：

LH45-16

规格：

DN20-DN350

Series flow-limiting check valves
Product description of flow-limiting check valves:
Series flow-limiting check valves are mainly used in systems where multiple pumps are connected in parallel and the flow is adjusted by changing the number of pumps. They are installed on the water pump. The outlet plays the role of limiting the flow of the water pump and stabilizing the head. Make the water pump work in the high-efficiency area to prevent the low-lift and large-flow water pump from overloading and burning the motor.
Performance characteristics of the flow-limiting check valve:
Support the pump working point to work in the high-efficiency zone
Limit the large flow of the water pump and operate at low efficiency
Micro-resistance slow-closing check stop When the pump is turned off, there is no water hammer phenomenon
Preventing the water pump from being overloaded and exceeding the rated current from burning the motor
Stepless adjustment of the lift function
Limiting the adjustable range of the lift. It is set at the factory
Medium temperature: ℃
Installation and debugging of flow-limiting check valve
The direction of medium flow is consistent with the direction of the arrow on the valve body
The external pressure-conducting pipe device has passed the pressure test before leaving the factory. It is strictly forbidden to damage the conductor during installation. Pressure device
The / pipe joint on the valve should be installed at the inlet of the water pump
It can be installed horizontally or vertically
When the required lift is greater than., first open the four-way counterclockwise, and then Then gradually close the pressure regulating valve clockwise. The outlet pressure will gradually increase during the closing process.
When the outlet pressure reaches the required lift, the initial adjustment is completed. Repeat the opening and closing of the water pump ~ times, each time running for ~ minutes, the outlet The debugging work is completed when the pressure remains unchanged
Depending on the water quality, the outlet pressure value should be checked frequently. When the outlet pressure is less than the set value, the filter should be opened to remove dirt.
Selection of flow-limiting check valve
It can be selected directly according to the nominal diameter of the water pump.
The control lift can be set according to the rated current of the motor or high-efficiency working conditions. The working lift setting value of the current-limiting check valve is adjustable. Generally, the factory setting value is the design working condition. Lift.