Hydraulic balance valve construction machinery parts PPHB-LAN

The balance valve can be understood as the check valve and the sequence valve in parallel mainly to prevent the load from falling rapidly due to its own weight when the load falls by the sequence valve, and to adjust the back pressure so that the oil passes through the check valve when the movement rises smoothly.

At this point in the balance, the valve's function is to hold the weight in mid-air like a fluid, a pressure lock or.

They are two hydraulic controls with different functions, the balance valve is used to balance the pressure of different parts of the system, and the hydraulic lock is a check valve that controls the flow of hydraulic oil.

This does not need to talk about the name of the balance valve, the idea is to balance the internal there is a linkage mechanism when the pressure on one side is high to share the pressure to the other end to ensure the pressure balance, and the hydraulic lock is when there is pressure on one side.

It is better to have a picture to illustrate.

Thank you for your answers but I still do not understand the balance valve is not to reach a certain pressure to open.

The balance valve is composed of two one-way relief valves, and the one-way you said should be only installed in the return oil circuit, and the valve is used as a back pressure valve if the accuracy of the motion position of the cylinder is required, and the back pressure valve can be installed only if required.

The working principle of the balance valve is balanced, and the valve belongs to the regulating valve category. Its working principle is to change the flow resistance of the fluid flowing through the valve by changing the valve, the gap between the core and the seat, and achieve the purpose of regulating the flow rate.