WHY USE A TRIPLE OFFSET BUTTERFLY VALVE INSTEAD OF A BALL VALVE?

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WHY USE A TRIPLE OFFSET BUTTERFLY VALVE INSTEAD
OF A BALL VALVE?
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INTRODUCTION
Butterfly valves and ball valves are both used in
flow control applications, where they can be used
to shut off or allow flow while also allowing
flow regulation in some cases. Both types of
valves have evolved to perform exceptionally well
in specific environmental conditions and
applications. We examine the case for butterfly
valve vs ball valve to help you decide which is
best for your application.
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BUTTERFLY VALVES HOW DO THEY WORK?
Butterfly valves are quarter-turn valves that use
a disc in the center of a pipe to allow or stop
flow. Butterfly valves are lightweight and thus
require less support, as well as being less
expensive than other types of valves. There are,
however, a variety of butterfly valves available,
ranging from the basic (concentric) option
described above to the triple offset butterfly
valve design, which was developed specifically
for use with harsh chemicals and in slurry or
other dirty flow environments. They have a full,
zero-leakage design that seals bubble-tight, a
mechanism that prevents clogging, and a shut-off
feature that means they will last longer. In some
ways, a concentric butterfly valve and a triple
offset butterfly valve design are very different
solutions, let alone when compared to a ball
valve.
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HOW WORK BALL VALVES?
A ball valve controls flow through it by using a
hollow pivoting ball. You can change the size of
the aperture and thus the amount of flow by
rotating the ball within its housing. They are
typically quarter-turn valves, which means that
turning the actuator handle 90 degrees provides
full flow. The valve control handle is typically
aligned with the ball's aperture, allowing for
quick visual confirmation of the valve's state.
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HOW TO SELECT A BUTTERFLY VALVE VS. A BALL VALVE
The primary point of comparison is price ball
valves are generally more expensive to
manufacture and maintain than butterfly valves of
equal capacity. Butterfly valves are also more
difficult to operate under high pressure and flow
conditions, and they are more prone to leakage.
The triple offset butterfly valve design, on the
other hand, is better suited to slurries or
liquids with solids in the flow because the
leading edge allows cutting of potential
obstructions. Because the valve port can be the
full diameter of the pipe, ball valves are
generally accepted to seal better than butterfly
valves and do not inhibit flow rates when fully
open.
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When comparing butterfly valves and ball valves,
remember that while the ball valve may appear to
be a better choice than the butterfly valve for
more generalized applications, they are not
intended for direct comparison. The triple offset
butterfly valve design, in particular, was
created for use in very specific circumstances.
Butterfly valves and ball valves from
industry-leading manufacturers are available from
BM Engineering Supplies. If you would like more
information on selecting the right valve for your
application, call us now on 9714-2287694 or email
info_at_astc-me.com
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Ali Salman Trading Co. LLCAddress Baniyas
Square-14th Rd Deira Dubai, UAE Phone
9714-2287694Website https//astc-me.com/ Emai
l info_at_astc-me.com
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