Hydraulic control valves are a general term for a series of multi-purpose control and safety valves. They consist of a main valve and its accessories, such as导管, guide valve, needle valve, ball valve, and pressure gauge. Depending on the purpose, function, and location of use, they can be transformed into remote control float ball valves, pressure reducing valves, slow-closing check valves, flow control valves, and pressure relief valves, among others. These hydraulic control valves can control pressure, flow, and level solely by the energy of the medium—the water—thus saving significant energy consumption and labor costs.

Hydraulic control valve structure composition

The hydraulic control valve is composed of a main valve and different guide valve systems. By installing various guide valve systems, the hydraulic control valve can have different operational functions. The main valve is of diaphragm double-chamber type, consisting of main components such as the valve body, valve core, valve seat, valve plate, spring, valve stem, intermediate body, diaphragm, and valve cover. The guide valve system is made up of components such as guide valves, conduits, needle valves, ball valves, and pressure gauges. Different connections can achieve various control functions.

Basic Principle of Hydropneumatic Control Valve

Hydraulic control valves, although categorized by different operational functions, do not all operate on the same principle. They utilize the pressure difference between upstream and downstream as power, controlled by a guide valve system, to enable hydraulic differential operation of the diaphragm (or piston). This operation is fully regulated automatically by hydraulics, thereby controlling the main valve's core to open, close, or remain in a specific regulating state.

The selection of hydraulic control valves primarily focuses on the main valve, including style, size, pressure, and material.

Whether it's pilot-operated relief valves, pressure relief safety valves, remote control float ball valves, or other types of hydraulic control valves, they can conveniently control fluid media solely with the energy of the medium—water. Their applications in building water networks, municipal water supply, fire-fighting water, pumping stations, irrigation, and other water accumulation systems are very widespread, and there is a high demand in the market.