Hydro control valve is a type of automatic control valve composed of a main valve and its external needle valve, guide valve, etc. Its working state is generally in a common state, normally open state, floating state, mainly relying on the adjustment between the main valve and the needle valve or pilot valve to control the water flow state.
The working principle of the hydraulic control valve is based on the pressure difference between the upper and lower reaches of the pipeline system as the power, controlled by the pilot valve, so that the diaphragm (piston) hydraulic differential operation, completely automatically adjusted by the hydraulic force, so that the main valve disc is fully opened, completely closed or in a state of regulation. When the pressure medium entering the control chamber above the diaphragm (piston) is discharged to the atmosphere or downstream low pressure area, the pressure value acting on the bottom of the valve disc and under the diaphragm is greater than the pressure value above, relying on the pipeline medium to push the main valve disc to the fully open position: when the pressure medium entering the control room above the diaphragm (piston) cannot be discharged to the atmosphere or the downstream low pressure area, the pressure value acting above the diaphragm (piston) is greater than the pressure value below, and the medium in the pipeline presses the main valve disc to a completely closed position; When the pressure value in the control chamber above the diaphragm (piston) is between the population pressure and the outlet pressure, the main valve disc is in an adjustment state, and its adjustment position depends on the joint control effect of the needle valve and the adjustable pilot valve in the attached piping system. The adjustable pilot valve can automatically adjust the opening of its own valve port through the downstream outlet pressure and with its changes, thereby changing the pressure value of the control chamber above the diaphragm (piston) and controlling the adjustment position of the main valve disc.
If you want to buy, welcome to learn about our products. We have a very complete range of models. But I recommend you to buy our DC hydro control valve. Our valve seat is inclined in the valve body cavity, and impurities in the water are not easy to stay on the sealing surface, so it is not affected by the water quality, and it always ensures flexible action and is more durable than most products on the market.
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