Description: Fourress Engineering offers different types of butterfly valves to be used for different purpose. The pump discharge butterfly valve is mainly used for the large pumping schemes, is highly cost effective. The pump discharge valve has high flow capacity and low head loss, which would reduce the pumping energy substantially on a continuous basis. These pumps are used in modern thermal power stations, nuclear power stations, lift irrigation projects, and metro water supply schemes. 90% of the valve closure will take 10% of the time and 10% of the remaining travel will take 90% of the time, hence best suitable on an operating system. The working of these pumps is quite simple. When pump starts the hydraulic oil is fed into the head end of the cylinder and the valve crack opens. Once the pumps picks-up full speed or the down stream is filled-up, valve opens fully. Valve can be closed before the pump stops/pump trip. The valve is closes due to counter weight without any external power. The pumps are equipped with hydraulic system with accumulators to facilitate opening of the valve in case of electrical power failure.
