Hubbell GUF4 Explosion Proof Union 1-1/4 Inch

Product Description

The HUBBELL GUF4 is a 1-1/4 inch explosion proof union designed for use in hazardous location electrical conduit systems. Explosion proof unions allow conduit runs to be broken and reconnected without disturbing the overall wiring, making them essential for maintenance access in classified areas. This fitting is installed by licensed electricians working in environments where flammable gases, vapors, or combustible dust may be present. The GUF4 provides a secure, gas-tight threaded connection point within the conduit system.

This union is suited for industrial and commercial hazardous location installations, including oil and gas facilities, petrochemical plants, grain handling operations, paint spray booths, and similar environments classified under NEC Article 500. It is used wherever the conduit system requires a union fitting to comply with hazardous location wiring methods in Class I or Class II division areas.

Key Features

• Explosion proof construction rated for hazardous location conduit systems
• 1-1/4 inch trade size for compatibility with standard conduit and fittings
• Threaded connection on both ends for secure, gas-tight assembly
• Designed to allow conduit disconnection and reconnection without disturbing adjacent runs
• Manufactured by HUBBELL, a recognized supplier of hazardous location electrical components

Compatibility

Designed as an OEM-style replacement or direct-install union for 1-1/4 inch threaded conduit systems in NEC-classified hazardous locations.

Installation Notes

Installation must be performed by a licensed electrician in accordance with NEC Article 500 and all applicable local codes governing hazardous location wiring. De-energize the circuit and verify the absence of voltage before opening any conduit fitting in a classified area. Ensure all threaded connections are made up fully and that no makeshift sealants are applied that would compromise the explosion proof rating. Conduit seals may be required at specific intervals per NEC requirements for the classified area.

Technical Specifications

• Trade Size: 1-1/4 inches
• Type: Explosion Proof Union

Standard Information

• Brand: HUBBELL
• Manufacturer Part Number: GUF4