“Howell-Bunger” or fixed cone jet valves are commonly used as regulation elements in dams.

They are placed at the end of the pipe, most commonly cantilevered. With a circular cross-sectional area they are designed to be operated (opened and closed) under the maximum anticipated water head conditions, achieving water tightness with a rubber-metal seal. Sliding between surfaces is always stainless steel/bronze.

If the discharge area requires a cylindrical jet rather than the conical jet from this type of valve (of wide spread), the valve can be provided with a concentrator. The concentrator can reduce the jet impact area considerably in both length and width.

The elements that make upHowell-Bunger” valves are:

  • Valve body
  • Shutter
  • Drive
  • Hydraulic power unit
  • Control desk
  • Position indicator
  • Counter flange
  • Concentrator