POTTERTON 402990 GAS VALVE SIT TANDEM

  • Our Part No: 1122462
  • MPN: 402990

We're sorry but this product has now been discontinued by Potterton Boiler Spares and can no longer be purchased.

No known replacement is available.

Why Choose DHS?

POTTERTON 402990 GAS VALVE SIT TANDEM.

Product Information: The gas valve is a gas distribution device. When there is a need for more gas in the burner, a signal is sent from the printed circuit board to the gas valve, which opens and allows gas to flow through the valve in to the burner or the pilot assembly dependant on the model of the appliance installed.

This part is listed against 2 boilers on our website, The MYSON APOLLO 60 SI and the MYSON APOLLO 80 SI LPG . If neither of these models match the appliance you have, please contact us before ordering so we can confirm this part is compatible. In the next tab there is an appliance grid with links to all boilers that contain this part, Please use this if you would like to view all other spares that fit that model and download the user manual for that appliance.

We recommend that all parts are fitted by a fully qualified gas safe certified plumber. If you require any assistance locating a part, please feel free to contact us. Collectively we have over 200 years of boiler spares knowledge and distribution experience and our friendly call centre staff will be happy to help you with any query you may have.


The POTTERTON 402990 GAS VALVE SIT TANDEM is a genuine, brand new Potterton Boiler Spares product, covered by a Potterton Boiler Spares manufacturer's guarantee.

Not what you're looking for? Try our unique Spares Finder tool or you can view all Potterton Boiler Spares products.

For advice on this or any product, please call us on 0330 123 3707, email us at web@dhsspares.co.uk, or see additional ways to contact us here.

This part fits the following 2 appliances (sorted alphabetically):

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

At DHS we offer a range of product options to suit different budgets and requirements, while maintaining quality and reliability across all categories.

Below is an explanation of each product type available on our website. Please note that not all products will have all options available.

Unbranded Part

BEST VALUE

Unbranded Component Product. Genuine manufacturer component, but no branded packaging.

  • Sourced Directly from the Manufacturer
  • Supplied in Unbranded Packaging
  • Same Quality & Function as OEM Version
  • Cost Effective Alternative
  • 12 Month Warranty

Branded Part

ORIGINAL PART

Original Equipment Manufacturer Component with branded packaging.

  • Genuine Original Part
  • Sourced Directly from the Manufacturer
  • Manufacturers Official Packaging
  • Trusted Manufacturer Quality
  • 12 Month Warranty

Alternative Part

Compatible replacement parts sourced from a third party Manufacturer.

  • Lower Cost Replacement Option
  • Fully Functional Alternative
  • Appearance, design or materials may differ from the original part
  • 12 Month Warranty

Refurbished Part

Original OEM components that have been professionally refurbished.

  • Genuine OEM Component Professionally Refurbished and Tested
  • Environmentally Conscious Choice
  • Excellent Value for Money
  • 12 Month Warranty

Need Help Choosing?

If you are unsure of which product category is right for your repair or installation, our team is happy to help.

Contact us for expert advice on compatibility, pricing and availability.

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