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Honeywell L641B1004 Pipe Stat Low Limit

Honeywell

Honeywell L641B1004 Pipe Stat Low Limit

Honeywell L641B1004 low-limit pipe thermostat with an adjustable range of 2°C to 40°C for pipe-mounted temperature control.

At a glance

  • Also known as 4200300
Manufacturer part no.
L641B1004
Showing prices

£56.02

£46.68 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 L641B1004 is a pipe-mounted thermostat with a low-limit range of 2°C to 40°C, part of Honeywell's L641 series of pipe stats. It senses pipe surface temperature and, in low-limit duty, operates when the pipe falls to the set point. It is used to bring on a boiler, pump or secondary circuit as pipe temperature drops.

Before you order

  • Confirm a low-limit function is what the circuit needs: a low-limit stat operates on a fall in pipe temperature, not a rise.
  • Check the pipework at the intended mounting point is accessible and suitable for a surface-mounted pipe stat.
  • Verify the 2°C to 40°C range covers the set point required for the application.

Not sure which part?

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