butterfly check valve butterfly check valve
butterfly check valve
Definition

Emergency valve can control the flow direction in order to prevent the breakage of plpes by the reverse flow due to the sudden rising of the flow speed. ordered by a control device. The closing speed of the valve disc can be adjusted.

Operation
- Opening valve
- Closeing valve
- Keeping the valve open at the medium degree
- Emergency self-closing(adjustable disc closing time by two steps-site
  adjustment avaliable)
Features
- Emergency valve can be substituted for butterfly valve & check valve.
- Control the flow by keeping the valve open at the medium degree.
- Adjustable the disc closing speed by two steps. When the valve close by position to prevent (can be closed slowly at the 85
  degree closing position to prevent water hammering) Can be closed quickly by emergency situation to prevent the reverse
  flow as general check valve usage.
- The cost of the installation and maintenance can be reduced.
- Free from shaking and noise.