UL / IECEx Explosion Proof Flexible Coupling, Flameproof Type, Two Male Fitting (1/2"~2")
UL / IECEx Explosion Proof Flexible Coupling, Flameproof Type, Two Male Fitting, KF--GJH-M Series is certified with explosion proof standard, UL and ATEX / IECEx. Whole assembly is made by stainless steel with compact and sealing structure providing strong and high-safety protection for electrical equipment used in hazardous environment or the places existing potential risk of explosion. Two end connectors can be switched between male and female thread type depending on installation requirement.
Flameproof type explosion proof flexible coupling is highly flexible to resist bending and explosion pressure meanwhile good to absorb vibration. Suitable to protect the electrical circuit in short distance or at narrow space and the location existing long term vibration. Maintaining safety of facilities in high risk environment and reduce unexpected loss.
Flameproof type explosion proof flexible coupling is especially applied for the environment containing explosive gas, dust or flyings, for example, refinery, offshore oil platform, gas plant, petrochemical plant, chemical plant, grain mill, gas station and etc.
Feature
-
Structure/Material：
- Standard：Insulating Liner + Stainless Steel 304 Inner Core + Stainless Steel 304 Braid
- Option：Insulating Liner + Stainless Steel 316 Inner Core + Stainless Steel 316 Braid -
Conduit Size：
1/2" to 2" -
Conduit Length (L)：
Max. 36" (UL Regulation) -
Compression Strength：
Max. 2000 psi (1/2", 3/4"), Max. 1200 psi (1"~2") -
Thread：
NPT, M -
RoHS Compliance:
Yes -
Certificate：
cULus (E490826), IECEx (IECEx UL 20.0075U), ATEX (DEMKO 20 ATEX 2393U), TS (TD09002U) -
ANSI/UL 1203
Size：1/2", 3/4"
--- Class I, Division 1, Groups A, B, C, D (Gases)
--- Class II, Division 1, Groups E, F, G (Dust)
--- Class III (Fibers)
Size：1", 1-1/4", 1-1/2", 2"
--- Class I, Division 1, Groups C, D (Gases)
--- Class II, Division 1, Groups E, F, G (Dust)
--- Class III (Fibers) -
IEC 60079
Size：1/2″ ~ 2″
Ex db ⅡC Gb (Gases)
Ex tb ⅢC Db (Dust) -
ATEX
Size：1/2″ ~ 2″
For Zone 1 / 2 (Gases), Zone 21 / 22 (Dust)
Ⅱ 2G Ex db ⅡC Gb (Gases)
Ⅱ 2D Ex tb ⅢC Db (Dust)
Parameter
| Conduit Length (L) | Thread | Nominal Size (inch) | Min. Radius of Bend (mm) |Part Number | |||||
|---|---|---|---|---|---|---|---|
| 1/2" | 3/4" | 1" | 1-1/4" | 1-1/2" | 2" [N] | ||
| 254mm | 305mm | 356mm | 406mm | 406mm | 406mm | ||
| 4" | M | KF--GJH1M411 | KF--GJH2M411 | - | - | - | - |
| NPT | KF--GJH1M421 | KF--GJH2M421 | - | - | - | - | |
| 6" | M | KF--GJH1M611 | KF--GJH2M611 | KF--GJH3M611 | - | - | - |
| NPT | KF--GJH1M621 | KF--GJH2M621 | KF--GJH3M621 | - | - | - | |
| 8" | M | KF--GJH1M811 | KF--GJH2M811 | KF--GJH3M811 | - | - | - |
| NPT | KF--GJH1M821 | KF--GJH2M821 | KF--GJH3M821 | - | - | - | |
| 10" | M | KF--GJH1M1011 | KF--GJH2M1011 | KF--GJH3M1011 | - | - | - |
| NPT | KF--GJH1M1021 | KF--GJH2M1021 | KF--GJH3M1021 | - | - | - | |
| 12" | M | KF--GJH1M1211 | KF--GJH2M1211 | KF--GJH3M1211 | KF--GJH4M1211 | KF--GJH5M1211 | KF--GJH6M1211 |
| NPT | KF--GJH1M1221 | KF--GJH2M1221 | KF--GJH3M1221 | KF--GJH4M1221 | KF--GJH5M1221 | KF--GJH6M1221 | |
| 15" | M | KF--GJH1M1511 | KF--GJH2M1511 | KF--GJH3M1511 | KF--GJH4M1511 | KF--GJH5M1511 | KF--GJH6M1511 |
| NPT | KF--GJH1M1521 | KF--GJH2M1521 | KF--GJH3M1521 | KF--GJH4M1521 | KF--GJH5M1521 | KF--GJH6M1521 | |
| 18" | M | KF--GJH1M1811 | KF--GJH2M1811 | KF--GJH3M1811 | KF--GJH4M1811 | KF--GJH5M1811 | KF--GJH6M1811 |
| NPT | KF--GJH1M1821 | KF--GJH2M1821 | KF--GJH3M1821 | KF--GJH4M1821 | KF--GJH5M1821 | KF--GJH6M1821 | |
| 21" | M | KF--GJH1M2111 | KF--GJH2M2111 | KF--GJH3M2111 | KF--GJH4M2111 | KF--GJH5M2111 | KF--GJH6M2111 |
| NPT | KF--GJH1M2121 | KF--GJH2M2121 | KF--GJH3M2121 | KF--GJH4M2121 | KF--GJH5M2121 | KF--GJH6M2121 | |
| 24" | M | KF--GJH1M2411 | KF--GJH2M2411 | KF--GJH3M2411 | KF--GJH4M2411 | KF--GJH5M2411 | KF--GJH6M2411 |
| NPT | KF--GJH1M2421 | KF--GJH2M2421 | KF--GJH3M2421 | KF--GJH4M2421 | KF--GJH5M2421 | KF--GJH6M2421 | |
| 27" | M | KF--GJH1M2711 | KF--GJH2M2711 | KF--GJH3M2711 | KF--GJH4M2711 | KF--GJH5M2711 | KF--GJH6M2711 |
| NPT | KF--GJH1M2721 | KF--GJH2M2721 | KF--GJH3M2721 | KF--GJH4M2721 | KF--GJH5M2721 | KF--GJH6M2721 | |
| 30" | M | KF--GJH1M3011 | KF--GJH2M3011 | KF--GJH3M3011 | KF--GJH4M3011 | KF--GJH5M3011 | KF--GJH6M3011 |
| NPT | KF--GJH1M3021 | KF--GJH2M3021 | KF--GJH3M3021 | KF--GJH4M3021 | KF--GJH5M3021 | KF--GJH6M3021 | |
| 33" | M | KF--GJH1M3311 | KF--GJH2M3311 | KF--GJH3M3311 | KF--GJH4M3311 | KF--GJH5M3311 | KF--GJH6M3311 |
| NPT | KF--GJH1M3321 | KF--GJH2M3321 | KF--GJH3M3321 | KF--GJH4M3321 | KF--GJH5M3321 | KF--GJH6M3321 | |
| 36" | M | KF--GJH1M3611 | KF--GJH2M3611 | KF--GJH3M3611 | KF--GJH4M3611 | KF--GJH5M3611 | KF--GJH6M3611 |
| NPT | KF--GJH1M3621 | KF--GJH2M3621 | KF--GJH3M3621 | KF--GJH4M3621 | KF--GJH5M3621 | KF--GJH6M3621 | |
Note：Nominal size 2" adopts 1-1/2" conduit body.
Structure Profile:
1. What is an explosion proof flexible coupling?
An explosion proof flexible coupling is a conduit component designed to prevent flame propagation while allowing flexible connections in hazardous areas.
2. Where are explosion proof couplings used?
They are commonly used in oil and gas, petrochemical, and industrial environments where explosive gases or vapors are present.
3.Why is flexibility important in hazardous area conduit systems?
Flexibility helps absorb vibration and movement, reducing mechanical stress and preventing damage to conduit connections.
4. What certifications are required for hazardous area products?
UL and IECEx are widely recognized certifications that ensure compliance with safety standards for explosion-proof equipment.
5.Is explosion proof flexible coupling suitable for offshore use?
Yes, it is designed for harsh environments including offshore platforms, where both explosion protection and durability are required.
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