Metallic Expansion Joints - Thorburn Flex Inc
Metallic Expansion Joints - Thorburn Flex Inc
Metallic Expansion Joints - Thorburn Flex Inc
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THORBURN<br />
FLEXIBLE PIPING SPECIALIST<br />
DUCTFLEX SERIES SDF<br />
ROUND METALLIC DUCTING EXPANSION JOINT TECHNOLOGY<br />
DESIGN<br />
<strong>Thorburn</strong> round Ductflex expansion joints are designed in accordance with the<br />
Fifth and Sixth Editions of the Standards of the <strong>Expansion</strong> Joint Manufacturers<br />
Association (E.J.M.A.) for use in dust collection and fume extraction duct<br />
systems. The pressure ranges are ±5 psi temperatures to 1800ºF (982ºC)<br />
depending on materials.<br />
BELLOWS<br />
<strong>Thorburn</strong> round Ductflex bellows are precision formed from cylinders of deep<br />
draw quality annealed sheets conforming to ASTM/ASME specifications. Bellows<br />
have a minimum of longitudinal seams, the same thickness as parent<br />
material, to insure uniform stress distribution and long service life.<br />
TYPES/SIZES<br />
<strong>Thorburn</strong> round Ductflex expansion joints are available in sizes from 12" I.D. to<br />
18 feet and can be supplied with lining purge nipples protective/insulating covers<br />
and special thermical packing for dust application.<br />
COLLAR<br />
ENDS<br />
Code "CC"<br />
1/4" thick X 1-1/2<br />
wide collars are designed<br />
to slip over<br />
duct and connect<br />
with a fillet weld.<br />
Carbon steel is<br />
standard. Other<br />
alloys furnished if<br />
specified.<br />
WELD<br />
ENDS<br />
Code "WW"<br />
1/4" thick and 3"<br />
wide with beveled<br />
ends designed<br />
to be butt<br />
welded to duct.<br />
Carbon steel is<br />
standard. Other<br />
alloys furnished if<br />
specified.<br />
FLANGED<br />
ENDS<br />
Code "AF"<br />
Standard carbon<br />
steel angle flanged<br />
ends are dimensioned<br />
on page 75.<br />
Companion flanges<br />
will be furnished<br />
when specified.<br />
Other alloys and<br />
sizes available upon<br />
request.<br />
<strong>Thorburn</strong><br />
professionals<br />
provide consistant<br />
quality you can<br />
always count on!<br />
All <strong>Thorburn</strong> welders and procedures<br />
are qualified as ASME Section IX<br />
<strong>Thorburn</strong> expansion joint team of skilled craftsmen preparing a<br />
<strong>Thorburn</strong> Ductflex expansion joint for angle flange placement.<br />
Page 70
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