Nom Diameter 300mm and above
Head up to 300m Free discharge and 150m with Hood
Each Fixed Cone Valve (also known as Energy Dissipation / Howell Bunger) is engineered to meet customer’s operating conditions sized to suit site installation considering system upstream of valve and piping to provide correct flow control designed for low level or bottom outlet reservoirs, flood control, irrigation schemes, and dissipate energy on end of a pressure conduit.
This valve can be used for flow control due to its high hydraulic efficiency, energy dissipation and vibration free performance.
The body has a fixed cone at one the end with a movable sleeve to convert potential energy of water into kinetic energy in free discharge. The valve is cylindrical and flanged upstream for connection to customer’s pipe. The body is connected to a downstream dispersing cone by streamlined radial ribs forming a series of discharge ports. Flow control is achieved by a reinforced stainless steel cylindrical sleeve which slides over bronze guide strips attached to the body rib edges. Fitted with resilient seal, metal to metal seal or a combination of both.
Supplied with manual gear, electric or hydraulic actuation outside the valve readily accessible for maintenance.
Where free discharge is not acceptable or to be limited to cylindrical form a suitable deflector or hood can be provided.
Small size valves are provided with an integral hood to confine jet to cylindrical form and large size valves are provided with Fixed Hood supported on separate foundation.
*** The pictures shows a 700 mm eTec Fixed Cone Valve supplied with an external hood
for a Dam Outlet application at a Hydro Power Station.
