Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU)

Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU) - main image 1 Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU) - main image 2 Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU) - main image 3


£22.10 (£18.42 ex. VAT) + P&P Lowest Price Guarantee
In Stock RRP £31.15
  • Product Description:

    Trevi A952501NU 1/2" flow cartridge assembly (x1) - anti-clockwise close.

    22mm hex headnut. New all-brass design released in early 2019.

    Sold as single units, one per pack. You will need two per shower.

    Trevi recommend that you replace both flow cartridges should one need replacing.

    May also be known by the older product codes A961648AA or A952500NU11.

    The Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU) is a genuine, brand new Trevi product, covered by a minimum 1 year Trevi 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 Trevi 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 Trevi
    • Name Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU)
    • SKU / MPN Trevi A952501NU
    • GTIN / EAN 4015413845007
    • Categories Trevi Shower Cartridges
      Shower Cartridges
    • Colour Brass
    • Fitment Screw In
    • Size 1/2"
    • Sub Type Ceramic Disc
    • Type Flow
    • Availability In Stock
    • Condition Brand New
    • Returns 30 day money-back guarantee
    • Manufacturer Guarantee Yes
  • The Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU) will fit the following 11 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 Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU) can be read below:

    • I bought these to replace the original flow valves on my Trevi shower - these used a plastic housing and this had completely broken away on one valve.
      These replacements fitted perfectly, are very easy to operate and should be far stronger.
      Good product and service, would recommend without hesitation.

      Graham Wood

    • Fixed the problem right away, quick delivery and cheaper than others!

      John Moore

    • TOP product shower working like new will be useing N.S.S again

      Dave White

    • Just what I needed. Very easy to fit. One cartridge was all I needed to mend the shower flow valve, although there are two cartridges in the unit.

      Roger Blamey

    • Allowed us to repair our thermostatic shower instead of replacing the whole item.

      Amanda Southgate

    • Parts came on time. Easily identifiable on web site.
      Great service /product as ordered

      Mr A Felton-Glenn

    • Exactly what I wanted, even though I was asking for the wrong pair of valves. The guy on the phone was brilliant making sure I recieved the correct valve's for my shower

      Andrew Hutchings

    • Upgraded part to original. Fitted fine as per telephone conversation. Works well. Perfect

      Andrew Waters

    • After fitting a pair of these new valves the shower is now working perfectly once again.

      John Savage

    • very prompt delivery, new original part as described

      Alex MacLeod

    • The product was easy to fit and had great assistance from Trevor at National Shower Spares. Thank you as the plumber told us that the shower needed to be replaced.

      Salma Hirji

    • Good product

      Phillip Durnall

    • The help I received to troubleshoot was great, I changed both flow valves and our 25 year old shower is now as good as new. The NHS are great but NSS is awesome!

      Philip Seymour

    • Items received quickly and now installed and working excellently.

      Andrew Robinson

    • I got the product I needed quickly, no fuss service excellent

      Keith Love

    • Part arrived quickly and I was able to track it for delivery.
      I bought 2 valves for Trevi Therm Mk2, one old one was easy to get out of the shower body, the other, I used a trick that I found on the internet, to melt the old plastic part that was jammed in the body using a soldering iron.
      Both new parts have all brass body which should not give that problem again (this was first replacement in 16 year old shower!).

      Nicholas Hamnett

  • Do you have a question about the Trevi 1/2" flow cartridge assembly (single) - anti-clockwise close (A952501NU)?

    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.

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    • My flow control initially turns water on to the shower then fails to respond to any further increase in flow despite rotating the control.
      After about 20 seconds the flow reduces and can only be (temporarily) increased by turning the temperature control up.
      The gears and spindle are not worn, so do I need to replace the Trevi 1/2 '' flow cartridges ?

      Hello, if you remove the spindle and cogs, turn the valves carefully with a pair of pliers, do they work?, if they do, and the flow still dimisnishes, you may have a supply/blocked filters problem on the temp cartridge.

    • Hi,
      When my Trevi boost shower is turned off, it still drips water from the shower head. Is is likely to be the flow cartridge that needs replacing or the booster cartridge? When working the power flow and water temperature is fine.

      Hello, definately the flow cartridges, there are tweo in each shower, A952501 , it may also be the gearbox A963067

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