Pneumatic Control, Inc. | Products | Ball Valves | Worcester

Fire-Rated Ball Valves*

Worcester Controls, Fire Rated Valves Assure Operational Integrity Before, During and After a Fire.

In recent years, many factors have contributed to an increased demand for fire safe valves. Engineers and plant managers have faced the rising cost of insurance of liability and property damage. There has been an across-the-board tightening of environmental and safety regulations. Also, the cost of replacing damaged property and the expense of after fire clean-ups have skyrocketed.

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 shut-off 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.

Fire Rated Valves for All Standards
Worcester Controls Fire Rated Valves meet the requirements of all major fire-safe standards including EXES 3-14-1-2A, API 607 Edition 4, Factory Mutual FM-7440 and British Standards BS5146 APP.B, BS 5351 Anti-Static and BS 6755-PT2.

Tight Shutoff
The ball in Worcester's fire rated valves moves downstream to create a metal-to-metal seal when the resilient seat has been totally sublimated in a fire. On three-piece valves, a metal centering ring aligns the pipe ends with the ball.

Anti-Static
All Worcester fire valves feature a thrustbearing or stem seal of 35% carbon filled TFE. This material has excellent bearing characteristics, seals well, and positively grounds the stem to the valve body under all operating conditions. Three inch and larger valves with 316 stainless steel stems feature positive ball grounding through the stem (IAW BS 5351).

No External Leakage
Process fluids are contained within the valves in a fire situation. The standard thrustbearing is 35% carbon- filled TFE. If heat from the fire sublimates the thrustbearing, the blowout-proof stem forms a metal- to-metal seal with the valve body. TFE or graphite coated stainless steel body seals (shown below) provide maximum fire safety. If a fire does occur, the 316 stainless steel "S" gasket provides a spring action to maintain the body seal throughout drastic temperature fluctuations. Larger valves utilize Graph-lock graphite body seals.

Standard Service vs. High Cycle
All Worcester Fire Safe Valves provide excellent performance as manually operated or automated valves. For high cycle operation, specify Series FZ94 3-piece or flanged valves. For cryogenic applications specify the Series 94 cryogenic valve through the Custom Products Department.

*Meet EXES 3-14-1-2A, API 607 Edition 3 & 4, Factory Mutual FM 7440 and British Standards.