HOWELL-BUNGER-TYPE FIXED CONE VALVE
“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 up “Howell-Bunger” valves are:
- Valve body
- Shutter
- Drive
- Hydraulic power unit
- Control desk
- Position indicator
- Counter flange
- Concentrator
