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Flowseal
Fire-Flow Seat Valves - Overview
The
Flowseal Fire-Flow™ high performance butterfly valve (HPBFV)
us 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 seal
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
or no pressure, the Fire-Flow seat 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.
Fireproof packing is used to prevent external shaft leakage.
- Sizes
2" - 48"
- Wafer
Body and Lug Body Style
- Available
in ANSI Class 150, Class 300, Class 600
- Electric
Actuators, Pneumatic Actuators, or
Gear Actuators and Manual Operators Available
Click to view Flowseal
Fire-Flow Seat brochure in pdf format. Requires Acrobat Reader
4.0 or greater.
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