Potterton Netaheat 16-22 MK1?

Does anybody know where I can get hold of a gas valve for this boiler

Lisa
November 2009

I have a problem (via my plumber friend) with the vapour valve switch on my very old potterton netaheat 10-16 boiler. Although still working at a very low gas pressure giving very lukewarm temperatures to the radiators, the plumber has isolated the problem (by a process of elimination) to be the vapour valve switch not working properly! We can't find a replacement in this area due to the age of the boiler and even if we could, a price of £200ish for a new part is not worth paying on a boiler on its last legs! I will be gutting my kitchen in a couple of years (cant afford it now) so I would prefer to keep it going a bit longer. Does anyone know where I can get a cheap or secondhand replacement valve to keep it going, or even have an old one lying around we could work a price out for?
Also how can you tell if the boiler is a Mk1 or a Mk 2 model?
Cheers
Graham

Graham
February 2009

We have a parts counter and have in stock a mercury valve for your model of boiler. If you still require it our no is 01782 279504

GT Thermal Ltd
October 2008

sorry just had a thought. did you say mk1 as that one does not have a mercury control these were only fitted to mk11 models - sorry

Paul the gasman
October 2008

yes i would agree it is the mercury switch which is operated by the pilot to operate the gas valve. - it always is no need to check. original interpart number 402801 or new number 402836 SWITCH, M/VAPOUR. or if you get the whole gas valve assembly the interpart number is 402499 Gas control valve, White Rodgers K25 1 g.c number 392745. but it must be fitted by a corgi engineer

Paul the gasman
October 2008

I am an engineer in the gas industry and would agree and also mention that their is a problem with your boiler that can couse productus of combustion to enter the room so would strongley recomend a new boiler.

Adam martin
September 2008