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Honeywell DU146-11/4E Angled Automatic By-Pass Valve 1 ¼" BSPF

Honeywell

Honeywell DU146-11/4E Angled Automatic By-Pass Valve 1 ¼" BSPF

Honeywell DU146-11/4E angled automatic by-pass valve with a 1 ¼" BSPF connection.

At a glance

  • Also known as 4200185
Manufacturer part no.
DU146-11/4E
Showing prices

£212.60

£177.17 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Honeywell DU146-11/4E is an angled automatic by-pass valve with a 1 ¼" BSPF connection. It is a differential by-pass valve, listed by Honeywell as part of the DU146 range, and is used to provide an automatic by-pass path within heating and plumbing system pipework.

Before you order

  • Confirm the required connection size is 1 ¼" BSPF and that the mating pipework thread matches.
  • Check that an angled body suits the pipe routing and the space available at the installation point.
  • Where the valve is being replaced, check the existing part number against DU146-11/4E before ordering.

Not sure which part?

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