Leakage Reduced in Superheater Bypass Valves Using Protected Inside Seat
Leakage Reduced in Superheater Bypass Valves Using Protected Inside Seat
2 PagesD351646X012/Oct18 For more information: www.Fisher.com POWER Leakage Reduced in Superheater Bypass Valves Using Protected Inside Seat RESULTS • Flash tank pressure has been maintained at 50 psig indicating no valve leakage. • Expected cost savings in excess of $3 million annually due to decreased feed water pumping load, increased plant capacity, and reduction in overall heat rate. APPLICATION Superheater bypass valves. CUSTOMER Large municipal electric utility. CHALLENGE Superheater bypass valves experience some of the most severe operating conditions in a supercritical power plant. The valves are required to pass cold water initially, then hot water and eventually super-heated steam. During these operating phases, the valves may be exposed to damaging cavitation an
