Compatible boiler flow sensors | HeatSpares

Compatible flow sensors for boilers (turbine, hall-effect) – matched by brand, OEM reference, and connection.

Choose by

  • Compatible brand: Vaillant · Bulex · Saunier Duval · Universal
  • Sensor type: turbine · hall-effect
  • Connection: DN15 · DN20 · quick-connect · other

Why a flow sensor fails

Scale, debris and long service life eventually stop the turbine reliably. Symptoms: DHW not firing on tap open, “no flow” fault codes with visible flow at the tap.

How to choose the right one

  1. Match the OEM reference and connection type.
  2. Verify compatibility with your boiler model on the product page.

Product grid

Create a trade account