Killark RE31S IMC Reducing Bushing 1 in x 1/2 in Threaded Steel Zinc Conduit

Reducing Bushing for IMC Conduit

The Killark RE31S is a threaded steel reducing bushing finished in electroplated zinc. It connects 1 inch male NPT threads to 1/2 inch female NPT threads within Intermediate Metal Conduit systems. The fitting carries hazardous-location ratings for Class I Division 1 and 2, Class I Zones 1 and 2, and Class II Division 1 and 2 environments.

Replaces Mismatched Conduit Entries

Use this bushing when a junction box or enclosure has a 1 inch threaded hub but the incoming IMC or threaded rigid conduit is 1/2 inch trade size. The jump is worth it whenever you must downsize a conduit entry without introducing a leak path or losing the hazardous-area rating. It eliminates the need for oversized conduit runs or makeshift reducer combinations.

Verify Thread Gender and Hazardous Rating

Confirm the existing hub provides a 1 inch male NPT thread and that the conduit end is 1/2 inch female NPT. Ensure the installation environment falls within the listed Class I Groups A through D, Class II Groups E through G, and Zone classifications. Check that the 3/4 inch overall length and 13/16 inch height fit the available enclosure depth.