Aqualisa 665903 On/Off Flow Diverter Cartridge for Futori Shower Valves - AQ-665903
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Summary
Aqualisa 665903 On/Off Flow Diverter Cartridge for Futori Shower Valves - AQ-665903
Aqualisa 665903 Diverter / Flow Cartridge
The Aqualisa 665903 is a diverter and flow-control cartridge designed for use in selected Aqualisa concealed mixer shower valves. It enables switching and routing of water flow between multiple shower outlets such as overhead shower head, handset or bath filling spout when fitted into a compatible Aqualisa shower valve body.
Function
This cartridge serves as the internal diverter and flow control mechanism inside the shower valve. When the diverter control is operated it re-directs water to the selected outlet and isolates the others, allowing reliable outlet switching without leaks or cross-flow.
Confirmed Compatible Aqualisa Models
- Aqualisa Futori concealed mixer shower valves that list part number 665903 as their diverter / flow control headwork
Because Aqualisa may have used 665903 in multiple shower models over time, other concealed mixer valve variants may also accept this cartridge where their spare-parts documentation shows 665903 as the required diverter/flow part. Always verify by checking the valve model code or the existing cartridge marking before ordering.
Selection and Verification
Before ordering, confirm that your shower valve is part of the Futori range (or otherwise documented to use 665903) and that the original diverter or flow headwork matches the 665903 specification. Diverter units vary across different Aqualisa valve series and look alone may be misleading.
When Replacement Is Recommended
Replace the 665903 cartridge if the shower fails to divert water correctly outlets leak or drip when switched flow is inconsistent or the diverter control becomes stiff or fails to operate smoothly. Installing a correct 665903 cartridge can restore proper outlet selection and stable flow without replacing the whole shower valve body.
Please message us through our Find a Part free service if you have any questions about the Aqualisa 665903 or need assistance in matching tap valve parts.
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Fast delivery
- UK delivery: £5.95 incl. VAT for this small packet item.
- For all in-stock spare parts the typical UK delivery timescale is 2-5 working days.
- If you need a part urgently then we can provide a next-day (delivered Mon-Fri) UK delivery service for all in-stock small parcels ordered before 3.00pm, Monday - Friday.
- Next day delivery is available to select at an additional charge during the checkout.
- Worldwide delivery available — see our delivery page for details.
Returns
- 14 days 'risk-free' returns.
- Start a return within 14 days of receiving your order by calling 0121 705 0866 or using our contact page.
- Full returns information is available in our terms and conditions.
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