To upgrade a valve without Class V (CLV) shutoff, a simple trim change (Figure 1) will solve the issue. 1. Upgrading a boiler feedwater valve’s trim can stop leaks. Courtesy: Emerson ...

It may become impractical for larger-sized globe valves for actuation cost and offers better reliability and serviceability of the trim. Single-Seat, Cage-Retained Seat (caged), Balanced — This is a ...