312 Irish Compression Straight Coupler (Offset)

The 312 Female Straight Coupler Offset is a brass compression fitting designed to transition between Irish Imperial pipe and a female threaded connection of a different size. This fitting features a compression connection on one end and a female BSP thread on the other, allowing for a reduction or increase in size between the pipework and the threaded component. Manufactured to IS EN 1254-2 standards for the Irish market, it ensures a reliable fit for Irish copper and PEX pipe. It is frequently used for connecting pipework to gauges, sensors, or heating equipment where the thread size differs from the pipe diameter.

Key Features

• Manufactured to IS EN 1254-2 standards

• High-grade durable brass construction

• Offset sizing for transitioning between pipe and different female thread diameters

• Compatible with Irish Imperial copper and PEX barrier pipe

• Suitable for domestic, commercial, and industrial heating and water systems

• Provides a secure mechanical joint without soldering

Technical Note

These are Irish Imperial fittings. The compression end is specifically sized for the Irish market and is not compatible with UK or European metric pipe. For the female threaded connection, use a suitable thread sealant or PTFE tape to ensure a watertight seal. When using with PEX or Qualpex pipe, the correct size pipe insert or liner must be installed.

Compression fittings are sized and described by the threaded side first, followed by the pipe diameter.