Crouse Hinds 7F UNF/UNY Expansion Unions Catalog Page
7F
UNF/UNY Expansion Unions
Application:
UNF/UNY expansion unions are designed to
be used in all threaded rigid metal† conduit
systems indoors and outdoors, in hazardous
locations to:
ɀ connect conduit to conduit
ɀ connect conduit to a junction box or device
enclosure
ɀ compensate for conduit cut too short
ɀ allow for expansion and contraction of
conduit
ɀ connect stub-ups to threaded conduit
ɀ replace sections of conduit runs
Features:
ɀ Compact design
ɀ Internal beryllium copper grounding spring
to insure positive grounding continuity.
ɀ Knurled surface on body and sleeve allows
secure gripping with wrench.
ɀ Steel construction for maximum strength.
ɀ Available in two styles – short length where
space is limited, long length when extra
expansion is required.
Standard Materials:
ɀ Body and sleeve – steel
ɀ Grounding spring – beryllium copper
Standard Finishes:
ɀ Steel – electrogalvanized with chromate
finish
ɀ Beryllium copper – natural
Certifications and
Compliances:
ɀ NEC/CEC:
Class I, Division 1 & 2, Groups C,D
Class II, Division 1, Groups E,F,G
Class II, Division 2, Groups F,G
Class III
ɀ UL Standard: 886
ɀ CSA Standard: C22.2 No. 30
UNYL
UNYL with sleeve extended
UNY
Male – Short
Conduit Size Cat. #
1
⁄2 UNY17
3
⁄4 UNY27
1 UNY37
UNYL
Male – Long
Conduit Size Cat. #
1
⁄2 UNYL17
3
⁄4 UNYL27
1 UNYL37
Dimensions
Cl. I, Div. 1 & 2, Groups C,D
Cl. II, Div. 1, Groups E,F,G
Cl. II, Div. 2, Groups F,G
Cl. III
UNFL
UNFL with sleeve extended
UNF
Female – Short
Conduit Size Cat. #
1
⁄2 UNF17
3
⁄4 UNF27
1 UNF37
UNFL
Female – Long
Conduit Size Cat. #
1
⁄2 UNFL17
3
⁄4 UNFL27
1 UNFL37
Explosionproof
Dust-Ignitionproof
168
Dimension
Size a* b c** d
UNY
1
⁄2 35⁄16 13⁄16
3
⁄4 33⁄8 17⁄16
1313⁄16 111⁄165⁄8 21⁄4
UNYL
1
⁄2 45⁄16 13⁄16 12
3
⁄4 41⁄2 17⁄16 11⁄16 211⁄16
15
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3
⁄16 111⁄16 15⁄16 215⁄16
1
⁄2 21⁄16
1
⁄2 21⁄8
9
⁄16
Size a* b c** d
1
⁄2 33⁄8 13⁄16
3
⁄4 37⁄16 17⁄16
1313⁄16 111⁄165⁄8 33⁄16
1
⁄2 43⁄8 13⁄16 13
3
⁄4 49⁄16 17⁄16 11⁄16 31⁄2
15
† Suitable with intermediate Metal Conduit
in non-hazardous locations
* Overall length at maximum expansion
** Maximum expansion
Dimension
UNF
UNFL
1
⁄8 111⁄16 15⁄16 313⁄16
1
⁄2 27⁄8
1
⁄2 215⁄16
3
⁄8
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