UNST3800 3/8" Copper Union Straight Connector

The UNST3800 is a 3/8" copper union straight connector providing a quick, secure and serviceable joint for air conditioning and refrigeration pipework. It ensures a consistent, leak-resistant seal without the need for brazing or special tools, making it ideal for installations, repairs and system modifications. Available exclusively from airconspares.com with fast UK delivery.

Key benefits

• Quick installation: easy assembly without heat or nitrogen purging.
• Serviceable design: can be disconnected and reused for maintenance.
• Leak-resistant: precision engineering provides a dependable seal.
• Durable build: made for long service life in demanding environments.
• HVAC/R ready: suitable for UK air conditioning and refrigeration systems.

Typical applications

• Joining or extending 3/8" copper liquid or suction lines
• Repairs and component replacements without brazing
• System upgrades and retrofit work

Specification

• Product code: UNST3800
• Type: Union Straight (inline)
• Pipe size: 3/8" (outside diameter)
• Material: Copper fitting with precision-machined mating faces
• Application: Air conditioning & refrigeration copper pipe connections

Installation guidance

• Ensure 3/8" copper pipe ends are cut square and cleaned.
• Deburr and inspect for damage before assembly.
• Hand-tighten components, then torque to recommended values.
• Pressure-test and leak-check before system start-up.

Good to know

• Match the pipe outer diameter carefully to the fitting size.
• For reducers, elbows or multi-angle fittings, see related Smartlock items.
• Trade and volume discounts available through airconspares.com.

Order UNST3800 online at airconspares.com for reliable fittings, competitive prices and fast UK delivery.