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Regin Compression Fitting 4mm Equal REGQ139

Regin

Regin Compression Fitting 4mm Equal REGQ139

Regin REGQ139 4mm equal compression fitting for joining two lengths of 4mm pipe in heating and plumbing work.

At a glance

  • Also known as 4270574
Manufacturer part no.
REGQ139
Showing prices

£3.24

£2.70 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Regin REGQ139 is a 4mm equal compression fitting used to join two lengths of 4mm pipe. It is part of the Regin consumables range and is intended for small-bore pipework on heating and plumbing systems. The equal configuration means both connections take the same pipe size.

Signs this part needs replacing

  • Visible weeping or dripping at the compression joint
  • Corrosion or verdigris around the nut or olive
  • A joint that will not seal after re-tightening
  • Cracked or deformed compression nut
  • Crushed or damaged olive preventing a seal

Before you order

  • Confirm the pipe size is 4mm
  • Confirm an equal fitting is required, with the same pipe size at both ends
  • Inspect the existing nut and olive before deciding whether to reuse them

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.