Types of hydraulic valves and their functions

Hydraulic valve is an automatic element operated with pressure oil, which is controlled by the pressure oil of the pressure distribution valve, and is usually used in combination with the electromagnetic pressure distribution valve, which can be used to remotely control the on/off of the oil, gas and water pipeline system of the hydropower station.

A check valve means that the fluid can only flow along the water inlet, but the outlet medium cannot flow back.It is used in hydraulic systems to prevent the reverse flow of oil or in pneumatic systems to prevent the reverse flow of compressed air.

A directional valve is a directional control valve with two or more flow forms and two or more ports. It is a valve that realizes the communication, shut-off and reversal of hydraulic oil flow, as well as pressure unloading and sequential action control.

A throttle valve is a valve that controls the flow of fluid by changing the throttle section or throttle length. The throttle valve does not have a negative flow feedback function, and is generally only used in situations where the load does not change much or the speed stability is not required.

The diverter collector valve is an independent hydraulic device that integrates the functions of hydraulic diverter valve and collector valve. Among them, the synchronous control hydraulic system has many advantages such as simple structure, low cost, easy manufacturing and strong reliability.Therefore, it has been widely used in hydraulic systems.

The speed regulating valve is composed of a pressure reducing valve with a fixed difference and a throttle valve in series, and is a throttle valve with pressure compensation.The throttle valve is used to regulate the flow rate, so that the pressure difference between the front and back of the throttle valve is a fixed value, eliminating the influence of load changes on the flow rate.

The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure by adjusting it, so that the outlet pressure automatically remains stable. It changes the throttling area to change the flow rate and the kinetic energy of the fluid, resulting in different pressure losses, so as to achieve the purpose of decompression.