Cut Sheet

Effective September, 2005
Copyright 2005
PAGE 2
800-621-1506
www.appletonelec.com
I-2
I
Unions, Sealing Fittings, Flexible Couplings,
Elbows, Drain/Breather, Close-Up Plugs:
Explosionproof
UNILETS
®
for Use with Threaded Metal Conduit
Applications: Unions
•
UNY and UNF unions are used for
joining conduit and connecting conduit
to enclosures. Facilitates modifications,
permits removal of enclosures without
turning or removal of conduit.
•
Expansion unions compensate for
expansion and contraction of conduit.
Applications: Sealing Fittings
•
Prevent passage of gases, vapors
or flames from one portion of conduit
system to another. Restrict any ex-
plosion to the sealed off enclosure.
Prevent pressure piling within conduit
system.
•
Required in Class 1, Division 1 and
2 locations within 18” of enclosures
containing apparatus that may cause
arcs, sparks or high temperatures.
•
Required in Class I, Division 1 and
2 locations where 2” or larger conduit
enters enclosure, fitting housing termi-
nals, splices or taps.
•
Required in Class 1, Division 1 and
2 locations at the boundary where
conduit leaves classified location.
•
Required in Class 1, Division 1 and
2 locations where two or more enclo-
sures are connected by 36” or less
conduit. Seal must be located within
18” of either enclosure.
•
Required where cables (which
exceed rate of gas or vapor transmis-
sion permitted for seals) are used in
Class 1, Division 2 locations.
Applications: Sealing Hubs
•
Used to seal vertical conduit risers at
switch gear and motor control centers,
sheet metal structures, or cast boxes
and enclosures.
Applications: Flexible Couplings
•
Used in areas where vibration and/or
movement is a problem. Also used in
place of rigid conduit in difficult-bend
situations.
Applications: Combination Drain/
Breather
•
ECBD, when installed in bottom of hous-
ing, functions as a drain for water formed
by condensation within system. Installed
in top of housing, it serves as a breather,
providing ventilation to minimize conden-
sation and prevent mildew formation.
ECDB Drain/Breathers
➌ EY, EYS, EYD Series Drain Seals
➍ ES Series Sealing Hubs
➊ UNY/UNF Unions
➋ UNY/UNF Expansions Unions
➎ EXGJH/EXLK Flexible Couplings
EL Elbows
BR Bell Reducer
PLG Close-Up Plugs