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Explosion-proof cable entry KOVTN with external thread

Product Description

The KOVTN is an explosion-proof cable gland with Ex d protection, specifically designed for connecting armored cables when installed in conduits in hazardous areas. The gland's external thread design ensures secure cable retention and a watertight connection to the pipeline, maintaining system integrity and the required level of explosion protection. This design allows for the integration of cable lines into conduits, which is particularly important for installations with high mechanical strength requirements.

Advantages

  • Optimal solution for systems with pipe wiring.
  • Sealed and safe connection of cable to pipeline.
  • High resistance to mechanical stress and vibration.
  • Versatility of application: can work with various types of cables.
  • Reliability and durability in aggressive environments and a wide temperature range.

Frequently bought together

Compliance with standards

GOST IEC 60079-1-2013
GOST 3160.15-2014 /IEC 60079-15:2010
GOST IEC 60079-31-2013
GOST 24754-2013
GOST 12.2.007.0-75
TR CU 012/2011
GOST 31610.0-2019 (IEC 60079-0:2017)
GOST 31610.7-2017 (IEC 60079-7:2015)
GOST 31610.15-2020 (IEC 60079-15:2017)

Certificates

Markings

Explosion protection marking
1Ex db IIC Gb
1Ex eb IIC Gb
Ex tb IIIC Db
1 Ex db IIC Gb X*
1Ex eb IIC Gb X*
Ex tb IIIC Db X*
*conditions are specified in the operating manual *conditions are specified in the operating instructions
Marking of mining equipment
RN1/RN2
Degree of protection
IP66/IP67/IP68
IK08

Technical data

Ambient temperature, °C
-60…+130
-75...+130 (for /HOLOD version)
-60…+185 (for /TERMO version)
Threads on connecting holes
Code M metric GOST 24705
Code N conical inch NPT
Code R pipe conical GOST 6211-81
Code G pipe cylindrical GOST 6357-81
Material
Nickel-plated brass, resistant to hydrogen sulfide vapor, hydrochloric acid and sea fog code NK
Stainless steel grade 08X18N10 according to GOST 5632-2014 (AISI 304) code N
Climatic category
NF1 (on demand NF2, NF3, NF4, NF5, HL1, HL2, HL3, HL5, MU1, MU2, MU3, MU4, W2.1 , W5 , T1...5 TV1...5, TM1...5)

Design parameters

Overall and connection dimensions of KOVTN

Explosion-proof cable glands KOVTN (FETAM), metric thread GOST 24705
Cable entry size Thread Overall dimensions, mm Diameter of the cable to be crimped, mm Weight, kg
The main thing Duplicate M1, GOST 24705 M2, GOST 6357-81 ØM C Internal Ød External ØD
КОВТН1М2Г FETAM1IC M20x1.5 3/4" 39 118 6-12 9-17 0,3
КОВТН1М2Г.../P FETAM1IC.../R M20x1.5 3/4" 39 118 3-12 9-17 0,3
КОВТН2М3Г FETAM2IC M25x1.5 1" 47 132 12-18 15-25 0,5
КОВТН2М3Г.../P FETAM2IC.../R M25x1.5 1" 47 132 6-18 9-25 0,5
КОВТН3М4Г FETAM3IC M32x1.5 1 1/4" 58 140 18-25 21-31 0,7
КОВТН3М4Г.../P FETAM3IC.../R M32x1.5 1 1/4" 58 140 12-25 15-31 0,7
КОВТН4М5Г FETAM4IC M40x1.5 1 1/2" 65 135 25-31 27-37 1
КОВТН4М5Г.../П FETAM4IC.../R M40x1.5 1 1/2" 65 135 18-31 24-37 1
КОВТН5М6Г FETAM5IC M50x1.5 2" 76 142 31-39 36-46 1,4
КОВТН6М7Г FETAM6IC M63x1.5 2 1/2" 96 151 39-47 45-53 2,2
Explosion-proof cable glands KOVTN (FETAM), tapered inch thread NPT
Cable entry size Thread Overall dimensions, mm Diameter of the cable to be crimped, mm Weight, kg
The main thing Duplicate M1, NPT M2, GOST 6357-81 ØM C Internal Ød External ØD
КОВТН1N2G FETAM1N2C 1/2" 3/4" 39 118 6-12 9-17 0,3
КОВТН1N2G.../P FETAM1N2C.../R 1/2" 3/4" 39 118 3-12 9-17 0,3
КОВТН2N3G FETAM2N3C 3/4" 1" 47 134 12-18 15-25 0,5
КОВТН2N3G/...P FETAM2N3C/...R 3/4" 1" 47 134 6-18 9-25 0,5
КОВТН3N4G FETAM3N4C 1" 1 1/4" 58 145 18-25 21-31 0,8
КОВТН3N4G.../P FETAM3N4C.../R 1" 1 1/4" 58 145 12-25 15-31 0,8
КОВТН4N5G FETAM4N5C 1 1/4" 1 1/2" 65 144 25-31 27-37 1
КОВТН4N5G.../P FETAM4N5C.../R 1 1/4" 1 1/2" 65 144 18-31 24-37 1
КОВТН5N6G FETAM5N6C 1 1/2" 2" 76 155 31-39 36-46 1,4
КОВТН6N7G FETAM6N7C 2" 2 1/2" 96 169 39-47 45-53 2,3
RKV adapter made of galvanized steel for connecting non-explosion-proof corrugated metal hose.*
Type RKV Name of metal hose Nominal bore diameter of metal hose, mm External connection thread diameter of KOVTN
pipe cylindrical G GOST 6357-81
RKV12 RZ-TsKh-12, MRPI-12 12 1/2"
RKV15 RZ-TsKh-15, MRPI-15 15 1/2"
РКВ20+АВ-2ГН-1ГВ RZ-TsKh-20, MRPI-20 20 1/2"
RKV20 RZ-TsKh-20, MRPI-20 20 3/4"
РКВ25+АВ-3ГН-2ГВ RZ-TsKh-25, MRPI-25 25 3/4"
RKV25 RZ-TsKh-25, MRPI-25 25 1"
РКВ32+АВ-4ГН-3ГВ RZ-TsKh-32, MRPI-32 32 1"
RKV32 RZ-TsKh-32, MRPI-32 32 1 1/4"
РКВ38+АВ-5ГН-4ГВ RZ-TsKh-38, MRPI-38 38 1 1/4"
RKV38 RZ-TsKh-38, MRPI-38 38 1 1/2"
РК W5 0+АВ-6ГН-5ГВ RZ-TsKh-50, MRPI-50 50 1 1/2"
RK W5 0 RZ-TsKh-50, MRPI-50 50 2"

* To connect metal hoses with different combinations of nominal diameter and diameter of the crimped cable, it is necessary to use a different size of the AB adapter.

Corrugated metal hose cold-resistant rubber hose reinforced with steel

Options

Options, accessories and versions
Marking
Stainless steel grade 03Х17Н13М2 according to GOST 5632-2014 (316L)
/316L
Grounding ring (cylindrical and metric threads)
/A31
Protective plug (for closing an unused cable entry)
/IBD
Cap for additional protection of cable entry
/ZK
Locknut (cylindrical and metric threads)
/KG
Marine version
/MORE
Non-explosion-proof design
/PROM
Additional sealing ring to extend the range of cable to be crimped
/R
Mining normal design
/RN
High temperature version
/TERMO
External sealing ring to maintain tightness (cylindrical and metric threads)
/UKF
Chemical-resistant design
/X2
Design for minimum operating temperature of -75°C
/HOLOD

3D models

STP models
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Additional information

KOVTN series cable glands utilize a combined unidirectional cable armor cluminaireing system and inner sheath seal. This combined system eliminates line stress/shear between the inner sheath and the cable armor/braid during cable gland installation. Installation of KOVTN series cable glands is more convenient and error-free: the single combined locking element eliminates the need for constant balancing between the armor cluminaire and the inner sheath retaining ring. This ensures a high-quality seal of the cable's inner sheath and a reliable galvanic bond between the gland body and the cable armor during subsequent operation. Furthermore, the overall size of the cable glands is significantly reduced, saving space and reducing the overall weight of the explosion-proof product.

The armor cluminaireing ring allows the KOVTN cable gland to be used with all types of armor/braiding: single-wire armor, braided armor, tape armor, and wire armor. An external sealing ring for IP protection prevents moisture from entering the cable gland, which could damage the armor/braiding.

Explosion-proof KOVTN cable glands ensure ground continuity between the cable armor/braid and the gland body using a cluminaireing ring. Waterproof PG-GERMETIK insulation is used to protect the cable armor/braid from prolonged flooding. These cable glands comply with DTS01 requirements.

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Adapter connecting thread size
Adapter material
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Model Breakdown
KOVTN 1x 2x 3x 4x 5x / 6x – TU 27.33.13-031-72453807-2017
1X - Standard size
2X - Thread type: NPT tapered inch - N; Metric GOST 24705 - M; Tapered pipe GOST 6211-81 - R; Cylindrical pipe GOST 6357-81 - G
3X - Standard size for external connection thread
4X - Thread type for external connection thread*: NPT tapered inch - N; Metric GOST 24705 - M; Tapered pipe GOST 6211-81 - R; Cylindrical pipe GOST 6357-81 - G
5X - Cable gland material: Nickel-plated brass - NK, Stainless steel - N
6X - Options, accessories and versions

Example: КОВТН3N4ГН -TU 27.33.13-031-72453807-2017
- Cable type: armoured (external thread)
- Thread: 1" NPT
- Thread (at the output): 1 1/4" cylindrical pipe GOST 6357-81G
- material: stainless steel.

Where to buy GORELTEX products

Saint Petersburg

Head office and production site

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193149, Russia, Leningrad region, Vsevolozhsk district, Novosaratovka village, Rabochaya street, house 9, building 1

Moscow

Sales office

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123112, Russia, Moscow, Presnenskaya embankment, 6, building 2, business complex "Imperia Tower", floor 12, office No. 15

Kazan

Sales office

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420061, Russia, Republic of Tatarstan, Kazan, st. Nikolay Ershova, 1A, Korston Business Center, floor 11, office No. 1110