D743H-D741X energy storage tank type liquid control butterfly valve  is suitable for the medium of water pump outlet pipeline, used to avoid and reduce the medium flow in the pipeline system and produce too large water hammer, to protect the pipeline system, its function is one valve for two valve (traditional pipeline design with gate valve with check valve or ordinary butterfly valve with check valve)

1. This valve is a new generation of liquid butterfly valve, it is mainly used for the medium of water pipeline system pump outlet, the stop and check closing function of one valve, the valve stop closed, can achieve fast and slow two stages to close, so as to eliminate or reduce the water hammer to prevent the medium backflow protection pipe system.

2. The valve adopts the accumulator to replace the heavy hammer of the hydraulic moving disc valve, and uses the liquid pressure energy storage to replace the heavy hammer potential energy, so that the valve has the advantages of reasonable design, small volume, light weight, and convenient maintenance.

3. The hydraulic station and electrical control box and the lower part of the valve can be installed in one type or split type, and the valve can be selected under different working conditions.

4. The valve adopts a three-eccentric metal sealing structure, which easily reaches zero leakage.

Design according to the provisions of GB / T 12238

Flange shall follow the provisions of GB / T 9113 and GB / T 17241.6

The structure length is as specified in GB / T 12221

Pressure test as specified in GB / T 13927 and JB / T 9092

Note: Cv value is measured under the standard condition of both ends of the valve is IPSI.