Proper Valve Trim Extends Life of Boiler Feed water Valves

摘要

Boiler feedwater valves operate under severe service conditions and are subject to premature failure from seat leakage, cavitation, particulates, and frequent cycling. However, once the type and root cause of damage is properly understood, installing the appropriate trim can solve most problems. In competitive power markets, combined cycle facilities are experiencing more operating cycles than owners initially planned for at the design stage. It's not uncommon for a combined cycle plant to experience more than 250 starts per year these days.