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SIRRUS SKWT3000-2 Thermostatic Cartridge SIRRUS SKWT3000-2 Thermostatic CartridgeSIRRUS SKWT3000-2 for BSM3000 DUETTE Shower Mixer Valve

SIRRUS SKWT3000-2 Thermostatic Cartridge for BSM3000 DUETTE Shower Mixer Valve (GUMMERS)

Part Number: SKWT3000-2
Only 2 left in stock.

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Product description


SIRRUS SKWT3000-2 Thermostatic Cartridge for BSM3000 DUETTE Shower Mixer Valve (GUMMERS). This is a genuine brand new SK3000-2 / SKWT3000-2 thermostatic cartridge. The cartridge has been discontinued, therefore the remaining stock is all that is available.

Brand: Sirrus
Product: Thermostatic Cartridge Assembly
Manufacturer Part Number (MPN): SKWT3000-2
Material: Brass

The SKWT3000-2 Thermostatic Cartridge is compatible with:
- Sirrus BSM 3000 Duette Thermostatic Mixer Valve

This Thermostatic Cartridge replacement part (SKWT3000-2) by Sirrus can be dispatched on the next working day if ordered before 3:00 PM, Monday to Friday.

A spring and a thermostat capsule are included with the cartridge.

Frequently Asked Questions
Q: Water is dripping even when the shower is turned off.
A: It is said, about 10,000 gallons of water are leaked and wasted per household in a year. If water is still seeping even if the valve is off, try tightening the shower head. If it continues to drip, either the cartridge, washer, or o-rings might need to be replaced.

Q: Is there an alternative cartridge for the BSM 3000?
A: The only replacement cartridge that specifically fits the Duette mixer valve is the SKWT3000-2.

Q: How do I remove a cartridge stuck in the valve?
A: Accumulation of limescale from inside the valve is one possibility that can cause a cartridge to lodge. Tap the edge lightly to loosen the limescale or use a limescale remover.

Concerning the BSM 3000 and the SKWT3000-2 Spare Part
The Sirrus BSM 3000 is a sequential shower and bath mixer valve that can be operated with a single control. The thermostatic element within the SKWT3000-2 cartridge regulates water temperature according to the preference of the shower user. And because of the cartridge’s safety mechanism, the valve will automatically shut off in case of problems with hot or cold water supply pressure.

Generally, a thermostatic cartridge can adjust water temperature by plus-minus 2℃ (35.6℉).

To achieve a stable ratio of hot and cold water without pressure oscillations, a thermostatic mixer valve (TMV) uses pressure balance. The cartridge reacts quickly to temperature changes, and therefore it is able to maintain the set thermostat without any unwarranted fluctuations.

38℃ (100.4℉) is the standard out-of-the-box calibration for most cartridges. The BSM 3000 unit is factory set to a maximum of 43℃ (109.4℉) but can be altered manually.
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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