Appleton EXGJH and EXLK Explosionproof Flexible Couplings

Appleton EXGJH and EXLK Explosionproof Flexible Couplings

Appleton EXGJH and EXLK flexible couplings are explosionproof and dust-ignitionproof fittings built for areas where vibration and/or movement would damage a rigid run of conduit. They can be used in place of rigid conduit in difficult-bend situations, with 1/2 thru 2 sizes constructed of an outer bronze braid over a brass core and 2-1/2 thru 4 sizes built from an outer stainless steel braid over a stainless steel core, both with an interior insulating liner and end fittings to match. The line is explosionproof, dust-ignitionproof, and watertight, with 1-1/4 thru 4 sizes rated for Class I, Group D; Class II, Groups E, F, G; and Class III locations, and stainless steel 1/2 thru 2 sizes additionally ATEX rated.

Key Features

• Heavy-Duty Design: Resists mechanical abuse in demanding industrial environments.
• Interior Insulating Liner: Protects conductors from abrasion under vibrating conditions.
• Tapered Threads: Accurately tapped, tapered threads deliver tight, rigid joints and reliable ground continuity.
• Integral Bushing: Smooth, rounded integral bushing in each hub protects conductor insulation.
• Explosionproof, Dust-Ignitionproof, Watertight: Rated for hazardous-location service.
• Conductivity: Electrical conductivity equal to rigid conduit on a similar length basis, so no bonding jumper is required.
• EXGJH Configuration: Both end fittings are female, each furnished with a removable male nipple.
• EXLK Configuration: Female end fitting with union at one end and a female end fitting with a removable male nipple at the other end.

Certifications & Compliance

• NEC/CEC: 1-1/4 thru 4 sizes rated Class I, Group D; Class II, Groups E, F, G; Class III
• ATEX: Stainless steel 1/2 thru 2 sizes rated Ex II2 GD; Ex d IIC Gb; Ex t IIIC Db; IP66

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Motor, Pump, and Vibrating Equipment Connections
• Hazardous and Classified Location Wiring
• Difficult-Bend Conduit Runs Requiring Flexibility
• Industrial and Petrochemical Facilities
• Explosionproof and Dust-Ignitionproof Raceway Systems

Why Appleton?

Appleton EXGJH and EXLK couplings pair a rugged bronze/brass or stainless steel construction with an insulating liner and tapered threads to deliver reliable, code-compliant performance in the toughest hazardous-location and vibration-prone installations. With explosionproof, dust-ignitionproof, and watertight ratings backed by NEC/CEC and ATEX compliance, they give electrical professionals a dependable alternative to rigid conduit wherever movement or misalignment is a concern.

EXGJH vs. EXLK — what the model number means: Both are explosionproof, dust-ignitionproof flexible couplings built from an outer bronze braid over a brass core. They differ in end-fitting configuration, per Appleton/Emerson's own catalog: EXGJH models have matching female connections on both ends, each furnished with a removable male nipple — symmetrical, either end can go either direction. EXLK models have a union fitting on one end and a female connection with a removable male nipple on the other — asymmetrical, one end unions directly to a fixed fitting. Select EXGJH for a symmetrical run between two open connections; select EXLK when one end needs to union onto an existing fixed fitting. The number after the letters is the trade size (e.g. 1/2 through 4).