Three-Piece, Full-Port Flanged, One-Piece Flanged

Worcester Controls has the quality solution for tough valve applications where operational integrity must be maintained before, during and after a fire. 

The solution is Worcester’s Fire-Rated Valves that assure tight shutoff and prevent external leakage in the tremendous heat of an industrial fire. Heavy-duty body bolts and pipe ends add a great margin of safety to Worcester Fire-Safe Valves. 

Normal service performance is maintained with bubble-tight bidirectional sealing and three rugged seating materials - TFE, Reinforced TFE and Polyfill. All fire-rated products can be ordered to meet NACE MR-01-75. 

Worcester Controls Series FM 51/52 valves are a line of rugged flanged ball valves designed specifically to meet requirements of the FM 7440 Standards, flammable liquid service. 

The valve performance features are the same as AF 51/52 and FZ 51/52 Worcester Fire-Safe valves. The approved AFM valves have specific seat and body seal materials, actuator sizes and solenoid valve types (see specifications). 

When a Series 39 pneumatic actuator is used for on-off or throttling service, a fusible plug with splash guard is installed in the air line to the actuator. 

At a predetermined temperature, the plug melts, exhausting air to close the valve well before the actuator is threatened by fire exposure.