Reducer Bushing

Reducer Bushing

A reducer bushing is a type of fitting used in electrical applications to connect two conduits of different sizes together. It is designed to reduce the size of the opening in a conduit, allowing for a transition from a larger diameter to a smaller diameter.

Product Details​​

Product Overview

  • Standard: UL 514B
  • Material: Brass, Electro -galvanized steel, Aluminum alloy, Hot dip galvanized steel

Product Details

The reducer bushing typically has two ends with different diameters. The larger end is inserted into the larger conduit, while the smaller end connects to the smaller conduit. The ends of the bushing may be threaded or non-threaded, depending on the specific application and the type of connection required.

Reducer bushings are available in various materials such as metal (e.g., brass, stainless steel). They are commonly used in plumbing systems, HVAC installations, and electrical wiring to adapt or transition between different conduit sizes.

The purpose of a reducer bushing is to facilitate a smooth and secure connection between conduits of different sizes. It allows for the efficient flow of fluids or the proper routing of electrical wiring while maintaining the desired diameter throughout the system.

Reference and Packing

Reducer Bushing for IMC/ RSC/ BS31/ BS4568/ JIS Type C CVL

Using for

JIS C 8305 Type C (Japan)

Using for

BS31/ BS4568 (England)

Using for

IMC – UL1242 (USA)

(*)RSC – UL6 (USA)

Product Code(***)

Size (mm)

Product Code(**)(***)

Size (mm)(**)

Product Code(***)

Size (inch)


















1 1/41(3/4)






1 1/21 1/4(1)

(*) The product code used for RSC steel conduit fitting is changed from “A” to “R”.

(**) Using for BS 31: Size of conduit is 19mm.
       Using for BS 4568: Size of conduit is 20mm.
(***) Hot dip galvanizing product code = Electro Galvanized steel product code + NN.

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