1. The butterfly valve is opened by hydraulic drive and closed by heavy hammer potential.

2. After installation, the valve can replace gate valve (or butterfly valve) and check valve, and the flow resistance coefficient is small, so the valve is energy-saving products.

3. When closing, it is divided into two stages: fast closing and slow closing. The former is fast closing and the latter is slow closing. According to different working conditions, the fast closing time, angle and hydraulic system can be adjusted.

4. It has the functions of automatic pressure-keeping and automatic reset with valve opening and double insurance. The electric control can be controlled by ordinary control and PLC according to the needs of users, realizing the linkage of pump and valve, and realizing the remote control on the spot and the joint control with computer.