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


£78.95 (£65.79 ex. VAT) + P&P Lowest Price Guarantee
In Stock
  • Product Description:

    Sirrus TS1500 thermostatic cartridge assembly - SK1503-2LP.

    Used to be known as SK1500-2.

    Now includes thermostat (SK740012).

    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:

  • The Sirrus TS1500 thermostatic cartridge assembly (was SK1500-2) (SK1503-2LP) will fit the following 6 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:

    • Ah cant sing their praises enough, our shower was stubborn, there was a part which looked part of the actual inside wedged and only through the phone call did it become apparent that there should be "no wedges" as it was put.
      thanks guys have hot water again, yippeeeee.
      From Ireland


    • Exactly what was required, no problem installing item

      Ken Laban

    • Very competitive pricing, fast delivery and a wide range of products. Most firms sell this product and exclude the thermostat then charge extra. Very impressed.

      Mark Gostling

    • Very easy adjustment on water temperature which was no any on the old one.Well done

      Darko Angelov

    • purchased and delivered well before expected delivery date, excellent customer service also when i phoned to ask a question, and now a really hot shower working again

      Ian Webster

    • Able to repair a shower rather than rip it uot and replace - good news considering no spare tiles.


    • Good service, correct part delivered arrived on time


    • The valve is good quality band fitted perfectly. All seals were provided.
      Easy to fit even for an amature.
      Technical advice was great and delivery was very rapid.
      Many thanks

      Raymond Brown

    • Delivery a day late probably caused by christmas post but cartridge fitted more easily than expected. Something to note however is that it is supplied fully open and with the hot on minimum... not a problem but would have been nice to know...

      Graham Jeffs

    • Only two days for the product to get to me. Also instructions on how and what to do in order to fit it, which was very usful. Much appreciated.

      Paul Lyons

    • An excellent and well made replacement shower cartridge. No more stiff control. The technical help line was very good. It would have been better to indicate the grease needs to be smeared around the back plastic unit not around the brass area.

      Balwant Rehal

    • Item arrived in good time with instructions to fit, very pleased

      Barry Bunworth

    • Excellent service and the shower part fitted easily. Would recommend the company without hesitation.

      Terence Allen

    • This was dispatched and arrived very quickly. It's super quality and has greatly improved my showering experience. The only downside is that most of the rest of my shower has been discontinued, so this cartridge is pretty much the only bit that I can actually replace!

      Richard Hudson

    • Excellent service and advice. Delivery spot on.

      Steve Tanner

    • Prompt accurate advice given , prompt delivery of the product . Excellent service .

      Alice King

  • 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