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a Geniune John Guest Part.

NB:-  Please note there is :-

  • minimum 5 - 7 day lead time on this part. 
  • a Minimum Order Quantity of 200

Brand: GrippaTank LTD

Product Code: 12TMV

12mm THERMOSTATIC MIXING VALVE is available for purchase in increments of 10
From £56.18 plus 20% vat £67.42

In Stock

FREE DELIVERY On all UK Mainland orders over £50 +VAT


DS-12TMV 12MM 1/2" BSP
Intended for caravan and RV plumbing in Australia and New Zealand, the John Guest Tempering Valve is designed to accurately regulate the temperature of water for activities such as showering, bathing and hand washing. If installed and maintained correctly the valve can reduce the risk of scalding.

 In the event of the cold water supply failing, the valve will automatically shut down the flow to prevent discharge of dangerously hot water.

To ensure full closure of the mixed water flow the minimum temperature differential between the hot water inlet to the valve and the mixed water outlet must be at least 15°C.


  • Fast Installation Times
  • Lightweight and Easy to Install
  • Easy to Clean Mesh Filter Seals
  • Simple to Service
  • Preset to 50°C
  • AS/NZ 4020 (Water Contact Approval)


Additional Information

Manufacturer GrippaTank LTD
Size 12mm
Fitting Type Thermostatic Mixing Valve

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Providing goods are in stock, if ordered before midday, we will dispatch same day. Whilst our products go out on a next day service, we do not guarantee this and recommend customers allow 1 - 2 days for delivery.
If you order is ultra urgent - please call us on 01223 790049 to confirm we can fulfill your delivery requirements.
We use the following companies for our shipments:
  • Next working day delivery from date of dispatch to UK Mainland*, and 2 - 3 day service for Europe. 
    UK Mainland - Tracked Service (9 - 6pm) - 8.15 + vat or over £50 + vat FREE to UK Mainland.
    Europeon destinations pay £17.75 + vat for a 2 -3 day service (express services are available upon request). 
    EU Mainland - 2 - 3 Working Day Service 29.95
    EU Mainland - Economy Small Parcel 3 - 4 Day Service 22.95
    UK Mainland - Next Working Day (Pre 9:00am) 44.99
    UK Mainland - Next Working Day (Pre 10:00am) 22.99
    UK Mainland - Next Working Day (Pre 12:00am) 14.99
    UK Mainland - Saturday 27.99
    UK Mainland - Saturday Pre 09:00am 64.99
    UK Mainland - Saturday Pre 10:00am 42.99
    UK Mainland - Saturday Pre 12:00am 34.99
    This service includes a free 1 hour slot delivery alert which can be texted or emailed to you on day of delivery.
  • 1 -2 working day delivery for pallets within UK Mainland. Overseas delivery lead time depend on the destination.
    UK Mainland - 1-2 Working Day Service 65.00 + vat if order is under £50 + vat
    Overseas pricing upon request POA


  • If you delivery requirements are very urgent, we can offer a same day delivery service across the UK and some parts of Europe. Call us for your bespoke quotation on 01223 790049.

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Contact Us

0800 098 8407

The Barns, Parkers Farm,
East Hatley, Sandy,
Bedfordshire, SG19 3HX
United Kingdom

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