UNST1400 1/4" Copper Union Straight Connector

The UNST1400 is a 1/4" copper union straight connector for air conditioning and refrigeration pipework. Designed for fast, secure installation, it provides a leak-resistant and serviceable joint without the need for brazing. Ideal for small-bore copper linesets used in split and multi-split systems. Available exclusively from airconspares.com with quick UK dispatch.

Key benefits

• Quick install: fits 1/4" copper tube without soldering or special tools.
• Reusable design: allows disassembly for maintenance or system modification.
• Leak-tight seal: precision-machined surfaces ensure consistent pressure retention.
• Durable materials: built to withstand HVAC/R system conditions.
• UK compliant: ideal for domestic and commercial refrigeration applications.

Typical applications

• Connecting or extending 1/4" copper liquid lines
• Service repairs or retrofits on split systems
• Compact installations where brazing is impractical

Specification

• Product code: UNST1400
• Type: Union Straight (inline fitting)
• Pipe size: 1/4" (outside diameter)
• Material: Copper with precision mating faces
• Use: Air conditioning & refrigeration copper pipe connections

Installation guidance

• Cut the 1/4" copper pipe square and deburr the edges.
• Clean the pipe ends and ensure mating faces are damage-free.
• Hand-tighten, then torque to manufacturer-recommended values.
• Pressure-test the joint before commissioning.

Good to know

• Ensure correct pipe OD for a proper fit.
• Browse other Smartlock fittings for reducers, elbows and multi-angle connectors.
• Bulk and trade pricing available through AirconSpares UK.

Order UNST1400 online at airconspares.com for quality Smartlock fittings, competitive prices and dependable UK delivery.