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Tricentric Metal-Seated
Butterfly Valves are available in sizes 3 thru 96 inch, 150 thru 600 ANSI
in Plain Wafer, Lugged and Double Flanged (Gate Valve and ISO 5752
face-face) configurations which can provide significant COST SAVINGS.
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As a “rule of thumb”, they
will be less expensive than a manual gate valve in sizes larger than 8
inch in stainless steel, 12 inch in carbon steel and automated from 3
inch.
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In all sizes, where available,
they will be substantially less than a metal-seated ball valve - of
course, CV has to be evaluated etc. - certainly one cannot pig lines, on
which Butterfly Valves are installed. The Metal-Seated Butterfly Valve is much lighter in weight, easier to install and maintain than most
competitive valve styles.
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Used extensively as an economical replacement for Gate Valves and Metal-Seated Ball Valves, Tricentric Metal-Seated Butterfly Valves are also a viable competitor to
many Soft Seated Tricentric High Performance Butterfly Valve installations
providing long term seating integrity typically ANSI/FCI Class VI or
better.
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They can cope with a broad
spectrum of severe services - everything from Black Liquor, Liquid Sulphur,
Coke, Ethylene, Oxygen, Hydrogen and Natural Gas to name a few - in
Service Temperatures ranging from minus 350oF through to High Temperatures
of 1600oF.
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Available in Exotic Materials,
with Steam Jacketing & Steam Tracing of Disc and Shaft, Stellite seat and
seal overlays, they prove to be very versatile. Gear operated Tricentric
Metal-Seated Butterfly Valves function with great ease as there is no
breakaway torque in the sealing system.
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The all-metal construction is
your assurance that a Tricentric metal seated butterfly valve is
inherently Fire safe, with some manufacturers having tested to the latest
edition of API. They can be used for on-off and many throttling
applications
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Class 150 |
