Page 1
HUBBELL ELECTRICAL PRODUCTS
A Division of HUBBELL INCORPORATED (Delaware)
INSTALLATION, OPERATION &
CLASSIFIED HAZARDOUS LOCATIONS
FITTINGS
ZONE CLASSIFIED HAZARDOUS LOCATIONS
SERIES BL, EYMF, FF, MF, MM, GUFS, GUMFS, GUML, and Y ( Elbows )
SERIES GUF, GUM, GUMM, UNF and UNY ( Unions )
CML 16ATEX1325X
T
amb
= -50 °C to +100 °C
1. General Safety Information:
of the product for his intended use, and assumes all risk and liability whatsoever in connection therewith.
2112 Fenton Logistics Park Blvd.
Fenton, Missouri 63026 USA
FOR USE IN
MAINTENANCE DATA SHEET
FITTINGS FOR USE IN ZONE
2813 II 2 G D
Ex db IIC Gb or* Ex db IIB Gb
Ex tb IIIC Db IP65 / IP66*
Operating Temperature Range:
-50°C to + 100°C or -50°C to + 400°C
*
* For Ex d Gas Group, IP Ratings, and Service
Temperature Range (by Cat. N o.), See Table 1 below
IECEx QPS 16.0012X
Ex db IIC Gb or* Ex db IIB Gb
Ex tb IIIC Db IP65 / IP66*
T
= -50 °C to +100 °C
amb
CAUTION: Before installing, make sure you are compliant with area classifications, failure to do so may result in bodily
injury, death and property damage. Do not attempt installation until you are familiar with the following procedures. All
installation must comply with the applicable Electrical Code.
Make sure that the circuit is De-energized before starting installation or maintenance.
Verify that the installation is grounded. Failure to ground will create electrical shock hazards, which can cause serious
injury and or death.
Important: Please read these instructions carefully before installing or maintaining this equipment. Good electrical
practices should be followed at all times and this data should be used as a guide only
Technical information, advice and recommendations contained in these documents is based upon information that Killark believes to be reliable. All the
information and advice contained in these documents is intended for use only by persons having been trained and possessing the requisite skill and
know-how and to be used by such persons only at their own discretion and risk. The nature of these instructions is informative only and does not cover
all of the details, variations or combinations in which this equipment may be used, its storage, delivery, installation, check out, saf e operation and
maintenance. Since conditions of use of the product are outside of the care, custody and control of Killark, the purchaser should determine the suitability
P/N KIL00921435 FORM NO. K1435 ECO-8-010-20 R03/20 Page 1 of 3
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HUBBELL ELECTRICAL PRODUCTS
A Division of HUBBELL INCORPORATED (Delaware)
INSTALLATION, OPERATION &
2. Application Information
UNIONS: Series GUM / GUF are the Killark Aluminum series and the UNF / UNY the steel / Iron series both used to
installation.
Step 2
The number of threads engaged must be a minimum of 5.
4. Conditions of Safe Use
1. With the exception of the IP66-rated Capped Elbows (Type Y-*-EX), the standard operating temperature range for all listed fittings
2112 Fenton Logistics Park Blvd.
Fenton, Missouri 63026 USA
MAINTENANCE DATA SHEET
FITTINGS FOR USE IN ZONE CLASSIFIED
HAZARDOUS LOCATIONS
join two opposing pieces of conduit or attach secure conduit pieces to junction boxes, devices or other fittings.
Series GUMFS male “swivel” elbows are GUFS female “swivel” elbows provided with a separate aluminum nipple.
3. Installation Instructions
CAUTION: THREAD TYPE and SIZE are marked on the fitting / adaptor and must be respected.
ONLY ONE threaded fitting / adaptor is permitted per cable entry. Never use reducers when installing fittings into an
enclosure.
BLANKING ELEMENTS shall not be used with fittings / adaptors.
If the enclosure is already in operation, it must be DISCONNECTED from the supplying circuit before beginning
Step 1
Ensure fitting thread type and size are compatible with enclosure thread. Where IPx5 or IPx6 ingress protection is required, the
use of a suitable non-setting thread sealant on all flamepath joints is required (ie: apply thin layer of Killark LUBG).
Tighten nipple into the enclosure/equipment with a wrench located on the center of the nipple. The nipple should be hand tight plus
one wrench turn per ANSI/ASME B1.20.1-1983.
Notes:
1. Nipples shall not be used for the direct inter-connection of enclosures.
2. Only one nipple is to be used with any singe cable entry on the associated equipment.
3. GUFS and GUMFS swivel bolt is Zinc-plated Grade B steel, 5/16 x 18 at the threads. Recommended minimum bolt torque is
16.3 Nm (12 lb-ft.).
is from -50 °C to +400 °C. For the IP66-rated Capped Elbow (with gasketed, threaded cover-to-housing joint), the standard
operating temperature range is from -50 °C to +100 °C.
2. A seal is not required between the fitting and a flameproof enclosure, provided::
1) volume up to 160 litters, and simple internal geometry, or
2) reference pressure up to 234 psi (for IIC), 196 (for IIB)
whichever of these two conditions is reached first.
** - A seal is required within 50 mm of the fitting/adaptor free end.
3. In application with larger flameproof enclosures (equal to and above 2/3 of the volume of 160 litres), or those with high reference
pressure value (equal to and above 2/3 of the maximum reference pressure values stated above), a further investigation of the
necessity of the use of seal may be required if :
- for group IIB - the enclosure has been populated on such a way that one or more cross-section areas do not remain minimum 20%
free.
- for group IIC - the enclosure has been populated on such a way that one or more cross-section areas do not remain minimum 40%
free.
P/N KIL00921435 FORM NO. K1435 ECO-8-010-20 R03/20 Page 2 of 3
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HUBBELL ELECTRICAL PRODUCTS
A Division of HUBBELL INCORPORATED (Delaware)
INSTALLATION, OPERATION &
HAZARDOUS LOCATIONS
5. Certification Information
CML 16ATEX1325X / IECEx QPS16.0012X
Table 1 - ATEX / IECEx RATINGS by Cat. No.
2112 Fenton Logistics Park Blvd.
Fenton, Missouri 63026 USA
2813 II 2 G D
Ex db IIB Gb Ex db IIB Gb
Ex tb IIIC Db IP65 or Ex tb IIIC Db IP66
or
Ex db IIC Gb Ex db IIC Gb
Ex tb IIIC Db IP65 or Ex tb IIIC Db IP66
= -50 °C to +100 °C
T
amb
Standards Applied: IEC/EN 60079-0; IEC/EN 60079-1; IEC/EN 60079-31
See Certificates for Editions of Standards used.
MAINTENANCE DATA SHEET
FITTINGS FOR USE IN ZONE CLASSIFIED
P/N KIL00921435 FORM NO. K1435 ECO-8-010-20 R03/20 Page 3 of 3
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