Aqualisa — Flow Cartridge (Headworks) inc. Knob — 910538
Genuine Aqualisa 910538 flow control cartridge (headworks) complete with knob. Confirmed fitment: Midas 110S bar mixer shower (MD110S) and Midas 110 bath shower mixer (MD110BSM).
Important — compatibility: This is the FLOW cartridge + knob for the Midas 110 range below.
If your issue is temperature (can’t regulate heat, stuck hot/cold), you need the temperature cartridge 910537 instead: Aqualisa 910537 — Midas Temperature Cartridge inc. Knob.
Not suitable for Midas 220/100, Quartz, Digital/Smart, or other Aqualisa series.
If your issue is temperature (can’t regulate heat, stuck hot/cold), you need the temperature cartridge 910537 instead: Aqualisa 910537 — Midas Temperature Cartridge inc. Knob.
Not suitable for Midas 220/100, Quartz, Digital/Smart, or other Aqualisa series.
Confirmed compatible models
- Aqualisa Midas 110S Bar Mixer Shower (MD110S)
- Aqualisa Midas 110 Bath Shower Mixer (MD110BSM)
If your valve is not one of the above, this is unlikely to fit — please check your exact model code.
Key features
- Genuine Aqualisa spare: 910538.
- Flow control headworks (on/off & flow) including knob.
- Direct replacement for stiff, seized or leaking flow headworks.
- Supplied as pictured (complete flow cartridge + outer knob).
How to confirm it’s the right part
- Your valve is an Aqualisa Midas 110 series and the exact model is MD110S or MD110BSM.
- The fault is with the flow side (hard to turn on/off, won’t shut off cleanly) — not temperature control.
- Your existing knob matches the style shown and you are replacing like-for-like.
Note: For temperature faults on Midas 110, use 910537 temperature cartridge.
Does not fit
- Non-Midas 110 series (e.g. Midas 220/100, Quartz, Aquastream, Digital/Smart).
- Temperature control on Midas 110 (use 910537 instead).
- Other Aqualisa bar mixers, bath taps, or kits unless specifically listed above.
Specification
- Brand: Aqualisa
- Part code: 910538
- Function: Flow/headworks cartridge inc. knob
- Compatible: Midas 110S (MD110S); Midas 110 BSM (MD110BSM)
- FixTheBog code: FTB12386
- Related: 910537 Temperature Cartridge inc. Knob
- Pack contents: 1 × flow cartridge + 1 × knob (as pictured)