Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP)

Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP) - main image 1 Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP) - main image 2


£85.55 (£71.29 ex. VAT) + P&P Lowest Price Guarantee
In Stock RRP £112.87
  • Product Description:

    Sirrus TS1500 thermostatic cartridge assembly - SK1503-2LP.

    Used to be known as SK1500-2. Now also includes thermostat (SK740012).

    For installation instructions, please refer to our blog.

    The Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP) is a genuine, brand new Sirrus product, covered by a minimum 1 year Sirrus manufacturer's guarantee.

    Available for same day despatch if ordered before 3:30pm Monday-Friday (otherwise despatching will be on the next working day). For the delivery options available for this product, please add it to your Basket or see our delivery options page.

    Not what you're looking for? See all Sirrus Shower Cartridges or try our unique Shower Spares Finder.

    For advice on this or any product, please call 01452 619836, email us at, or see our contact page.

    Product Specifications:

    • Brand Sirrus
    • Name Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP)
    • SKU / MPN Sirrus SK1503-2LP
    • GTIN / EAN 5014868004914
    • Categories Sirrus Shower Cartridges
      Shower Cartridges
    • Colour Brass
    • Fitment Screw In
    • Type Temperature
    • Availability In Stock
    • Despatch Same Day Despatch
    • Condition Brand New
    • Returns 30 day money-back guarantee
    • Manufacturer Guarantee Yes
  • The Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP) will fit the following 7 products.

    List(s) are sorted by product type and then alphabetically.

    Hover overTap any icon below to see a preview of that model.

    May fit other products.

    If you are unsure of your product model, or would like more information, please contact us.

  • A selection of the latest reviews for the Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP) can be read below:

    • Great supplier fast delivery will recommend 👌

      John Hudson

    • Received promptly. As ordered. Happy with the service

      Alastair J Tait

    • Quick delivery, correct part. Thanks to the team for quoting me the correct part number. Good comms.

      Keith Bailey

    • No problem

      Neil Watson

    • Worked fine. Didn't realize that the body O-rings were not included but the old ones were OK to use.

      Jonathan R Thomas

    • All good

      Geoffrey Norris

    • Exactly as ordered on schedule what more can you ask for.

      Ed Barton

    • Good service received quite quickly part was perfect fit .

      Rui Neto

    • Can't fault the helpful and quick service that I received. The part in the end was not right for me (through no fault of the company) and the refund process was straightforward and quibble free. These guys know their showers!

      Lucinda Perriam

    • Fantastic service, very quick on delivery.

      Lee McManus

    • When my shower went to cold only I thought it would be a job for a plumber I was wrong I bought this replacement mixer and with a bit of help from YouTube removed the old replaced it with the new and hey presto we had lift off it couldn't have been easier and couldn't be happier

      Martin Chase-Byrne

    • Working well 😁

      Richard Sparks

    • Great replacement product. All parts are accounted for. Fast delivery. Thanks *****


    • Excellent service, very helpful staff

      Gerard Kehoe

    • Brilliant product and fast delivery

      Adam Bamping

    • spoke to john on the phone...extremely helpful guy..unable to obtain original part as obsolete but advised on replacement..perfect fit...thanks very much :)

      Julian Falconio

  • Do you have a question about the Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP)?

    Click the button below to send a question to one of our expert members of staff and we will email you back a direct response. If we feel the information might be useful to other customers, we will also show your question below for others to see.

    Ask a Question

    • Hello
      I have just received 2 x SK1503-2LP cartridges which you sent out to my plumbers merchant, Ashwell's In Cheshunt. These are to repair 2 x Armitage Shanks Thermostatic 3 showers. Can you please tell me what the 'o' rings are for which are loose in the accessory pack. There is nothing in the instuctions only on how to adjust the temperature.
      Many thanks

      Hello, one of the o rings goes inside the main body, the other is for the headnut. setting the temp is done via a grubscrew down the centre spindle , anti clockwise hotter, clockwise cooler, I have also e-mailed the instructions to you.

    • Hi I have a TS 1503 the temperature control is fine but it will not turn off fully and there is often a drip, It will sometimes stop if fully turned home hard.
      Can you please suggest a path to resolution?
      Thank you

      Hello, you have two options, 1 buy and fit a seal pack, (cheap but fiddly) or fit a new cartridge, (dearer but quicker) the seal kit is part number SK1500-1, the cartridge SK1503-2LP

    • Hello, Can you please tell me what size socket one needs to fit the head nut? Also how deep must it be to not touch the top of the cartridge. I have a Bristan Java JTHBSMVOC and it seems very difficult to access the head nut in order to undo it.
      Many thanks.

      Hello, the headnut is 29mm, the depth is 47mm

    • I have a sirrus opec ts1503 and I can only get hot or cold out of it there is no middle ground for warm? I've tried adjusting the thermostat temperature but that hasn't worked? Someone said its the cartridge, are the replacement cartridges sold here also able to adjust the thermostat temperature like the one that's on the shower now?
      Thank you

      If you are in a hard water area you may have to de scale cartridge, if this doe's not work you will require a new cartridge.

    • I have had our Sirrus TS 1500 for about 15 years . The water on max temp is not that hot although the water generated by the boiler is. Should look at repalcing the cartridge. Will this resolve the problem do you think?
      Also is the screw holding the cartridge in a left or right had thread?

      Hello, the part to replace will be the SK1500-3 stat & piston, the thread for the head nut is a std anti-clockwise thread

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