Fixed cone valves are used to regulate flow from dams and reservoirs.
It is a free discharge valve that is commonly used as a turbine bypass valve, reservoir drain, or continuous discharge flow control valve. Model 117 has a fixed cone with contoured ribs that eliminate the vibration problems associated with other fixed cone designs. Flow is controlled by movement of an external stainless steel gate which has a drip tight metal-to-metal shut off against the Nitronic 60 seat. When discharging into the atmosphere, the jet spreads out in a wide cone angle and breaks up into a fine spray. If containment of the jet is desired, a hood can be installed which concentrates the flow.