The Service Life Of Hydraulic Valves Is Related To Their Correct Use

The service life of hydraulic valves is not only related to their quality, but also to the suitability of the user's actual use. Improper operation of hydraulic valves can cause even more serious damage to them, and it is necessary to pay attention to their correct use.

The pressure flow characteristics of hydraulic valves are also important indicators for measuring the performance of hydraulic valves. By comparing the pressure flow characteristics, the advantages and disadvantages of design performance can be preliminarily determined.

Generally speaking, the smaller the pressure loss generated by hydraulic valve flow (such as rated flow), the better. The more flow under the same pressure loss, the better. The pressure flow characteristics of hydraulic valves can be compared with valves of the same shape and size. The smaller the pressure loss under measurement, the better the performance, and the better the flow under the same pressure difference.

1. Some hydraulic valves with oil discharge ports need to be directly connected to the oil tank and not to the main return pipe in the system, otherwise unexpected consequences may occur. For example, when the discharge pipe of the pressure reducing valve is connected to the main return pipe, the flow rate in the system's main return pipe will change at any time, causing the pressure loss of the oil in the return pipe to constantly change, resulting in unstable output pressure of the pressure reducing valve.

2. Some intermediate unloading electro-hydraulic directional valves cannot be reversed without separate pre connected control oil at the control oil port. Therefore, the internally controlled electro-hydraulic directional valve needs to be equipped with a pre pressure valve at its P port or a back pressure valve at its return port.