FLOWSEAL Fire-Flow™ Valve
The FLOWSEAL Fire-Flow™ high performance butterfly valve is a fire-safe, soft seat quarter-turn valve. The Fire-Flow™ design incorporates two patented seats which function together to seal off pipeline flow. In normal operation, the soft seat provides a bi-directional "bubble tight" shutoff (zero leakage); the metal seat provides bi-directional shutoff in the event of a fire, in conformance to industry fire-safe requirements.

With little to no pressure, the Fire-Flow™ seat creates creates a self energized seal against the disc. Higher line pressures act on the geometry of both seats to dynamically load them against the disc, creating higher sealing forces in either direction.

 

The Fire-Flow™ metal seat is made of either inconel (annealed) plate or 300 series stainless steel plate which is shaped by a proprietary hydroforming process into its unique, patented design. Stainless steel outer bearings are included for post fire disc and shaft alignment and fireproof packing is used to prevent external shaft leakage.

Free Valve Sizing

 
Seal Variations
Lower Packing Variation (Above)

The ANSI 150 30" through 48"; ANSI 300 14" through 30"; ANSI 600 10" through 16" sizes feature a two-piece shaft design which utilizes a lower packing seal in the valve body to prevent external leakage. The component parts are of the same design used in the packing assembly in the top of the valve body neck.

 

 End Seal Variation (Above)

The ANSI 150 14" through 24" sizes feature a two-piece shaft design. The lower shaft utilizes an end seal in the body to prevent external leakage. The component parts include an end seal, an end cap, and end cap bolts.

© Pneumatic Control, Inc. 1999/2000