D342X Double Eccentric Butterfly Valve

The double eccentric butterfly valve, often referred to as a high-performance
butterfly valve, is highly regarded for its minimal maintenance demands. Its
primary application extends to the drainage systems of water plants, power
plants, steel manufacturing, the chemical industry, water source engineering,
environmental facility construction, and various other sectors. Particularly
well-suited for water pipelines, this double eccentric butterfly valve serves
as both a regulation and interception tool. As a double eccentric butterfly
valves supplier, we provide long-lasting double eccentric butterfly valves
known for their dependability, having met the stringent ISO standards.
 
Butterfly valves are valves which control the flow with the 90°angle turning
of the disc. DISAI butterfly valves are double eccentric and rubber sealing
ring is kept in place by single piece retaining ring. This design ensures 100%
sealing and makes it possible to change the sealing ring without special
equipment and dismantling of any parts other than retaining ring.
WORKING PRINCIPLE
The eccentric principle is that the stem shaft is both deviated from the valve
body center,also deviated from the seat. The double eccentricity effect allows
the butterfly plate to quickly detach from the valve seat when the valve is
opened, greatly eliminates unnecessary excessive
Disai Double Eccentric Butterfly Valve PRODUCT FEATURES
-Variable choice of actuators.
-Bi-directional tightness.
-Drop tight shut-off at rated pressure.
-Suitable for isolation and control service.
-Maintenance free design.
-Low operating torque requirement.
-Easy installation.
-Light weight and smaller volume requirement.
-WRAS approval for potable water.
What is the difference between double eccentric butterfly valve, triple
eccentric butterfly valve and zero eccentric butterfly valve?
Double eccentric butterfly valve have two offsets and are available in carbon
steel, stainless steel, Hastelloy and other ANSI Class 600 rated body
materials, with a variety of PTFE seats and fireproof designs with metal backed
seats. Double offset butterfly valves are suitable for a wide range of
applications, including high pressure and high temperature environments.
have three eccentricities and are designed for demanding applications with
high pressure, high temperature and corrosive fluids.
Zero-eccentric butterfly valves have no offset and are suitable for low
pressure, cryogenic and general-purpose applications where tight shutoff is not
important.
 
PRODUCT RANGE
-DESIGN: EN593
-SIZE RANGE: DN200-DN4000
-Face to face dimension according to EN558-1, series 13/14
-Flange connection according to EN1092-2 PN10 PN16 PN25 PN40
-Valve top flange according to ISO5211
-Closed clockwise
-Internal&External epoxy coating
-For medium drinking water, water, and sewage
-Bidirectional

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