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Biasi Magnetic Flow Switch and Filter Kit BI1091502

Biasi

Biasi Magnetic Flow Switch and Filter Kit BI1091502

Magnetic flow switch and filter kit for Biasi gas boilers from serial number N018400805 onwards.

At a glance

  • Also known as 1650210, N1923-A
Manufacturer part no.
BI1091502
GC number
E83-081
Showing prices

£64.84

£54.03 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 Biasi magnetic flow switch and filter kit, part number BI1091502, is a combined assembly fitted to Biasi gas boilers. It detects water flow in the domestic hot water circuit and signals the boiler to fire, while the integral filter traps magnetite and suspended debris before it reaches the switch. This version is supplied for appliances from serial number N018400805 onwards.

Signs this part needs replacing

  • Boiler does not fire when a hot water tap is opened
  • Domestic hot water runs intermittently or cuts out mid-draw
  • Flow switch fails to respond to water flow through the DHW circuit
  • Filter element blocked with magnetite or system debris, restricting flow
  • Boiler locks out or flags a fault relating to water flow or hot water demand

Before you order

  • Confirm your boiler model and GC number against the fitment list above
  • Check the appliance serial number is N018400805 or later
  • Verify the existing component is marked BI1091502

Not sure which part?

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