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SVR21 Ultra Flow Cartridge for ART3210 Shower Valve SVR21 Ultra Flow Cartridge for ART3210 Shower ValveUltra SVR21 Shower CartridgeSVR21SVR21-Valve

SVR21 Ultra 3/4" Ceramic Disc Quarter Turn Cartridge for ART3210 Shower Valves

Part Number: ULTRA-SVR21

SALE: £14.83

You save: £21.16 (59%)
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Product description


SVR21 Ultra 3/4" Ceramic Disc Quarter Turn Cartridge for ART3210 Shower Valves - Clockwise close (anti-clockwise open).

Total Length (including bottom seal): 85.7mm
Diameter at Widest Point: 28.5mm
Top Spline Diameter: 7.8mm
Top Spline Teeth / Notches: 20
Barrel Diameter: 23.6mm
Lower Thread: 27.6mm
Upper Thread (closer to spline): 24mm
Bottom Seal Colour: Blue (for Cold Side)
Close Direction: Clockwise Close (Anti-Clockwise Open)

This on / off valve cartridge is used in a number of different Ultra valves and needs replacing if your shower begins to drip from the shower head or from out of the on/off handle. This is because the ceramic discs within the cartridge have become damaged and no longer create a water tight seal.

If you don't know if you need the SVR21 cartridge because you don't have a code, please measure the cartridge and compare it to the technical diagram in picture 2. If you're still unsure, send us a photo of your cartridge and give some of the key measurements.

To remove the old SVR21 cartridge from the valve, use a 17mm spanner (ideally a box spanner) and turn the cartridge anti-clockwise). When the cartridge is removed, check inside the valve for debris that may have found its way through the pipes and into the valve as it may have even been these little bits that have damaged the ceramic discs. Once you are happy that the valve is clear of debris, put silicone grease on the black o'ring (and preferably on the blue rubber seal at the bottom). By doing this, it will create a better long term water tight seal.

Screw the new cartridge into the valve and tighten. Turn the shower on and the dripping shower should be fixed.
shipping & Returns


  • Delivery of this item is priced as a 'small' packet. UK delivery costs £5.95.
  • 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 3.30pm, 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.


  • 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.
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