Many users do not understand how to adjust the plunger pump. Let’s take an example to set the pressure of the piston pump to 22 mpa, which is the same as the system pressure of 22 mpa.
1. At the pump head position of the piston pump, find a hexagon head similar to a screw (with a small plastic cap wrapped in black and yellow), and have a retaining nut that serves as a lock. If you loosen the nut first, and then rotate the screw clockwise, the pump pressure will increase.
2. After slowly rotating, you should be able to hear a sound of oil leakage, which is emitted from the safety valve of the system. When hydraulic oil passes through the safety valve during operation, the temperature of the safety valve itself will obviously rise above the body.
3. Adjust the safety valve to the same height, approximately 3-5 turns clockwise, and then adjust the screw of the pump head. During the jump, there should be a mechanical pressure gauge connected to the system and the pressure measuring point at the pump outlet, adjusted to a pressure of 22 mpa.
4. Then, rotate the valve body screw of the safety valve counterclockwise. When the pressure on the mechanical gauge is at 22 mpa, the safety valve makes sound, overflows oil, and operates. Then, rotate the safety valve clockwise for about 15-20 degrees, and the adjustment work is basically completed.
Generally, the nameplate of a plunger pump will have the maximum working pressure of the plunger pump, which is usually higher than 20 mpa. In addition, the nameplate parameter of the safety valve of the system should also have a maximum working pressure higher than 22 mpa, and if it is also lower, it cannot be adjusted.
POOCCA Hydraulic Co., Ltd. has a complete product line and sufficient inventory; It includes 110 well-known brands, 1000+models, and regular products in stock, providing customers with a high-quality, efficient, low-cost, short lead time, and fast logistics procurement experience.
Post time: Mar-31-2023
