Killark R-31 Explosion Proof Conduit Reducer 1 to 1/2 Inch

Product Description

The KILLARK R-31 is an explosion-proof conduit reducer designed to transition conduit runs from 1 inch down to 1/2 inch in hazardous location electrical installations. This fitting is built to contain any ignition or arc event within the fitting body, preventing propagation to the surrounding atmosphere. It is a core component in Class I and Class II hazardous area wiring systems found in petrochemical facilities, refineries, grain handling operations, and industrial plants. Licensed electricians and industrial electrical contractors install this fitting as part of a listed explosion-proof conduit system.

The R-31 is used where a conduit run must step down in trade size at a junction, panel entry, or device connection point within a classified hazardous location. It is suited for use in Division 1 and Division 2 areas where flammable gases, vapors, or combustible dust may be present. The fitting integrates into rigid metal conduit systems requiring continuous explosion-proof integrity throughout the raceway.

Key Features

• Explosion-proof construction rated for hazardous location conduit systems
• Transitions conduit from 1 inch to 1/2 inch trade size in a single fitting
• Threaded connection design maintains explosion-proof conduit system integrity
• Compact form factor suitable for tight installation environments
• Package dimensions of 5.75 x 5.75 x 4.37 inches allow for straightforward jobsite staging

Compatibility

Designed as an OEM-style fitting for use in explosion-proof rigid metal conduit systems requiring a 1 inch to 1/2 inch trade size reduction in hazardous locations.

Installation Notes

Installation must be performed by a licensed electrician in accordance with NFPA 70 (NEC) Articles 500-505 governing hazardous location wiring. De-energize the circuit and verify lockout/tagout procedures are complete before working on any conduit fitting in a classified area. All threaded connections must be fully engaged per NEC requirements for explosion-proof systems. Do not use this fitting in a non-explosion-proof conduit assembly where system integrity would be compromised.

Technical Specifications

• Inlet Trade Size: 1 inch
• Outlet Trade Size: 1/2 inch
• Package Dimensions (L x W x H): 5.75 x 5.75 x 4.37 inches
• Weight: 3.0 pounds
• UPC: 78393657002

Standard Information

• Brand: KILLARK
• Manufacturer Part Number: R-31