Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Biasi DHW Flow Switch BI1091104

Biasi

Biasi DHW Flow Switch BI1091104

Magnetic DHW flow switch and spring for Biasi Garda, RIVA and Parva boilers up to serial number N012040206.

At a glance

  • Also known as 1650209, N8858-B
Manufacturer part no.
BI1091104
GC number
E83-082
Showing prices

£36.62

£30.52 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 DHW flow switch (part number BI1091104) is a magnetic flow switch supplied with its spring, used in Biasi gas boilers. It detects hot water draw-off at the domestic hot water circuit and signals the boiler to fire for DHW demand. This version is specified for appliances up to serial number N012040206.

Signs this part needs replacing

  • No hot water when a tap is opened
  • Boiler does not fire on DHW demand
  • Intermittent or fluctuating hot water delivery
  • DHW flow switch fails to activate the boiler
  • Sticking, damaged or broken spring or magnetic switch

Before you order

  • Confirm the boiler serial number is up to N012040206
  • Check the appliance model against the fitment list
  • Verify the existing part number is BI1091104
  • Inspect the existing flow switch and spring for damage

Not sure which part?

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