1. The valve adopts large eccentric and multiple eccentric structure, and the valve plate adopts butterfly disc structure, which is characterized by small flow resistance.

2. Using hydraulic damping device to make the valve disc produce slow closing, effectively preventing damage to the sealing vice.

3. The valve seat is designed to be tilted, with short closing stroke and time, completely avoiding the damage caused by water hammer to the pump.

4. The area of the flow path in the cavity of the valve body is larger than 40% of the area of the through diameter, and there is almost no pressure drop after the medium passes through the valve plate, so the head loss is small. Compared with the general check valve, greatly reducing energy consumption.

5. tilted seat design, the entire opening and closing angle of 40 °, the stroke less than 1/2 of the rotary check valve. short opening and closing time, energy-saving effect is obvious.

6. With a unique lower (or upper) cylinder buffer mechanism, the valve plate closes in place 5 ° before the start of slow closure. Valve plate shaft rotation is more flexible, can save a lot of energy.

7. Unattended, no external signal control of the valve working mode. Hydraulic damping slow closing device is an independent system, can be adjusted according to the working conditions, without oil pressure or power supply, etc. to control it, no maintenance, environmental protection and energy saving, reduce operating costs.

8. Skewed disc type three eccentric hard seal check valve is suitable for horizontal installation or vertical installation on the pipeline.