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Potterton Flow Protection Device (110C) 5142133

Potterton

Potterton Flow Protection Device (110C) 5142133

Flow protection device rated at 110C for Potterton Commercial Sirius FS 400 and FS 525 boilers.

At a glance

  • Appliance family: Potterton Commercial Sirius FS
Manufacturer part no.
5142133
Showing prices

£80.40

£67.00 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 FLOW PROTECTION DEVICE (110C) is a Potterton Commercial safety component fitted to Sirius FS commercial gas boilers. It monitors flow conditions within the appliance and acts as a protective cut-out, shutting the boiler down when the set threshold is reached. It is supplied as a spare part under Potterton part number 5142133.

Signs this part needs replacing

  • The boiler locks out or shuts down on a safety trip during or shortly after firing.
  • The device has tripped and will not reset.
  • Repeated high-limit shutdowns as the appliance reaches operating temperature.
  • Overheat or flow faults that recur after other likely causes have been checked.
  • Visible damage, corrosion or leakage around the device body or its connections.

Before you order

  • Confirm the appliance is a Potterton Commercial Sirius FS 400 or FS 525, as the device is listed for these models only.
  • Check the part number 5142133 against the marking on the component being replaced.
  • Confirm the 110C rating matches the device currently fitted.
  • Commercial boiler repair should be carried out by a competent heating engineer.

Not sure which part?

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