Aqualisa 669908 Thermostatic Cartridge for Concealed Siren Shower Mixer Valves

SUMMARY

Aqualisa 669908 is a thermostatic cartridge assembly for Aqualisa Siren thermostatic shower mixer valves. It is used inside the valve body to regulate the mixed water temperature and help maintain stable showering temperature from the hot and cold supplies.

This cartridge is suited to verified Aqualisa Siren concealed, recessed and exposed mixer shower valve applications. Check the valve model, trim style and existing cartridge code before ordering, especially where the shower has been serviced previously or where exposed and concealed Siren parts are being compared.

Technical Details

- - Manufacturer code: 669908

- - Part Number: AQ-669908

- - Part type: thermostatic shower cartridge

- - Valve range: Aqualisa Siren thermostatic mixer shower valves

- - Siren valve hot and cold orientation: hot on the left and cold on the right when viewed from the front

- - Siren valve inlet fittings: 15mm compression on verified concealed installation data

- - Verified Siren system pressure range: 0.1 bar to 10 bar max static

- - Maximum hot water supply temperature: 65C

- - Verified supply temperature range: 5C to 20C cold and 55C to 65C hot

- - Verified water system suitability: gravity, boosted gravity, balanced high pressure and combination boiler systems

- - SRN001CA concealed valve inlet centres: 149mm

- - SRN001CA concealed valve outlet connection: 15mm compression

- - SRN001EA exposed valve inlet centres: 148mm to 155mm

- - SRN001EA exposed valve outlet connection: 1/2 inch BSP

Typical Fault Symptoms

- - Shower temperature fluctuates or is difficult to control

- - Shower does not maintain the selected mixed temperature

- - Shower runs too hot or too cold even when the supplies are correct

- - Temperature control becomes stiff or unreliable after scale build-up or cartridge wear

Confirmed Compatible Models

- - Aqualisa Siren concealed valve only 669904

- - Aqualisa Siren Exposed Shower Valve - Chrome SRN001EA

- - Aqualisa SRN001CA Siren Concealed Mixer Shower with Adjustable Head Spare Parts

Before Ordering Check

- - Match the existing cartridge code 669908 where visible

- - Confirm the shower is from the Aqualisa Siren thermostatic mixer valve range

- - Check whether the valve is concealed, recessed or exposed before ordering surrounding trim parts

- - Flush the pipework and clean inlet filters during servicing because debris can reduce flow and affect cartridge performance

- - Use silicone grease on suitable cartridge O-rings during fitting and avoid petroleum-based lubricants

Related Spares You May Need

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- - Aqualisa Asp/Srn Check Valves Pair

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- - Aqualisa Asp/Srn Concealed Mounting Plate

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- - Aqualisa Asp/Srn Concealed Inlet Elbow Assembly Pair

- - Aqualisa Asp/Srn Concealed Valve Outlet Assembly

- - Aqualisa Asp/Srn Concealed Inlet Filters/Washers

- - 150mm Universal Shower Hose - NXT734

Installation Note

Isolate the hot and cold water supplies before removing the old cartridge. After fitting, restore the supplies gradually, check for leaks, confirm correct hot and cold orientation, then test the temperature control through its full movement before putting the shower back into use.

FAST DELIVERY

• Delivery of this item is priced as a 'small packet'. UK delivery costs £5.95 incl. VAT.
• 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.
• We delivery WORLDWIDE. For more information about international deliveries, read our delivery page.

RETURNS

• If you need to return a part then please telephone Di Vapor on 0121 705 0866 with the reasons for the return within 14 days of receiving the goods.
• For more information please see our terms and conditions.