It can replace the functions of the original electric gate valve and check valve at the pump outlet, integrate the electromechanical and hydraulic system into a whole, and reduce the floor area and infrastructure investment.

The electro-hydraulic control function is complete, and it can be debugged and controlled locally as an independent system without additional configuration; It can also be used as an equipment unit of the distributed control system (DCS) for centralized management through the central computer of the I/O channel, and realize linkage operation with pumps, turbines, bypass valves and other pipeline equipment; It is also equipped with a manual function. When there is no power supply, it can also manually open and close the valve to meet the valve commissioning and control requirements under special working conditions.

Good controllability, wide adjustment range and strong adaptability. The electro-hydraulic control system is equipped with multiple adjustment points, which can be set according to different pipeline control requirements to ensure that the valve can be opened according to the preset time and angle and closed in fast and slow stages when the conditions for opening and closing the valve are met. And can realize power-free shutdown. Effectively eliminate destructive water hammer, prevent the occurrence of runaway events of pumps and water turbine units, reduce the pressure fluctuation of pipe network system, and ensure the safe and reliable operation of equipment.

The main sealing pair is a double eccentric rubber sealing structure, which is easy to open and close and reliable to seal; The increased eccentricity makes the valve have good self closing and self sealing performance. The medium and small diameter butterfly valves are designed as streamline flat plate structure, while the large diameter butterfly plate is designed as double flat truss structure, with small crowding and smooth water flow. The flow resistance coefficient of the valve is only 0.1-0.6, which is far less than the flow resistance coefficient of check valve (1.7-2.6), with obvious energy-saving effect.

Product description:

The hydraulic controlled slow closing check valve is mainly installed at the inlet of the hydraulic turbine of the hydropower station, used as the inlet valve of the hydraulic turbine, or installed at the pump outlet of the water conservancy, electric power, water supply and drainage and other pumping stations to replace the functions of the check valve and gate valve. During operation, the valve cooperates with the pipeline host to effectively eliminate the water hammer of the pipeline through the preset opening and closing procedures, so as to realize the reliable cut-off of the pipeline and protect the pipeline safety. It has small flow resistance coefficient, high automation, complete functions, stable and reliable performance, etc.