Leakage and Sticking Eliminated in Turbine Bypass Valves using Fisher Bore Seal Trim
Leakage and Sticking Eliminated in Turbine Bypass Valves using Fisher Bore Seal Trim
2 PagesPOWER Leakage and Sticking Eliminated in Turbine Bypass Valves using Fisher ® Bore Seal Trim RESULTS • The tighter shutoff achieved with the bore seal trim has reduced lost energy costs by an estimated $435,000 per year. • The wider tolerance of the bore seal design makes the valve less prone to sticking and start-up delays. New Fisher ® bore seal trim is ideal for steam and gas applications requring Class V shutoff. APPLICATION Turbine bypass valves CUSTOMER Combined-cycle natural-gas-fired merchant power plant CHALLENGE During startup, shutdown, and load disturbances in a power plant, the boiler (heat recovery steam generator) and steam turbine need to be isolated from one another. This is to protect the turbine from any water carry over, protect additional plant eq
