Try to increase the suction flow as much as possible

If adjusting the inlet and outlet valves does not achieve the effect, you can adjust the safety valve at the outlet of the pump.The outlet pressure of the screw pump is achieved by adjusting the inlet and outlet to achieve the required pressure. When the pressure of the screw pump is low, the reasons should be eliminated from the following steps from simple to complex. 1. Check the pump's operating current when the pump is running to see if it is consistent with the description in the manual. Fully open the suction valve of the pump,

or try to increase the suction flow as much as possible, such as adding a small pump in front of the suction. Disassemble the gland of the pressure reducing valve, and use a wrench to press down the spring appropriately, but the pump cycle pressure Increase the pressure to adjust the outlet pressure of the pump, but according to the requirements of the pump manual, the pressure should not be too strong.

The above two steps have no effect. The motor must be considered. 3. This China Deep Well Pumps Manufacturers is also a pressure reducing valve. 2. In addition, close the outlet valve as small as possible without affecting the flow rate, and you can see that the pressure can increase significantly. Hope the first step and the second step will solve the problem. In this case, the pump must be replaced. If there is no problem with the motor, it may be necessary to check whether the screw and pump cylinder of the screw pump are worn and cause internal leakage.

When purchasing a centrifugal pump, be sure to remove the gland of the packing device and check the quality of the pump water seal ring and packing. The surface of the inner casing of the pump casing should be kept smooth, and the flow passage in the volute of the pump casing should be uniform, and there should be no sudden changes in the water area to reduce the hydraulic flow loss. Because it can not only reduce water leakage, but also withstand wear, it is also called a leakage reducing ring or a wear ring.