Semi Lug Double Eccentric Cargo Oil Butterfly valves

General Applications:

  • Shipbuilding industry, water works, heating and ventilation, power plants, Chemical industry, etc.
  • Similar as wafer type except a pair of the threaded bolt hole at upper and lower side in way of the stem for easy mainternance of adjacent pipe.
  • Easy handling and light weight.
  • Less quantity of bolt hole and easy installation.
  • Keep liquid remained during repairing adjacent pipe.

It effects friction-free contact between body and seat since the rotation axis(stem) of the valve disc is shifted from the center by a distance of the width of A and B, a cam effect is produced which prevents from wearing the seal surface, lessens seating torque and offers longer service life and easy operation.