Access problem for removing and replacing ballcock
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MGo
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Access problem for removing and replacing ballcock

by MGo » Wed Sep 06, 2023 6:37 pm

I know how to replace a ballcock in a feed cistern. But the small top opening on the Polytank is making unscrewing it on the inside seemingly inaccessible. All the videos I have seen online show tanks with good access. Anyone got any tips?

stoneyboy
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Re: Access problem for removing and replacing ballcock

by stoneyboy » Thu Sep 07, 2023 10:14 pm

Hi mgo,
You should be able to undo the feed pipe nut, undo the valve backing nut and slide out the old valve. That way you will only need to get a hand through the access hole.
Regards S

MGo
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Re: Access problem for removing and replacing ballcock

by MGo » Fri Sep 08, 2023 3:53 pm

Thanks very much for the reply. I was intending to use the method shown in the videos of just removing the valve arm on the inside (gripping the arm/unscrewing the metal nut). But I will have to use the feed pipe method with PTFE tape because of the olive. The manufacturer has confirmed not to cut out a part of the top of the tank to get access as it would reduce the structural strength. I guessed it might which was why I asked them.

stoneyboy
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Re: Access problem for removing and replacing ballcock

by stoneyboy » Fri Sep 08, 2023 10:04 pm

Hi mgo,
It’s a relatively easy operation but if you are fitting a part 1 valve you may have to bend the arm. A part 2 valve has adjustment on the ball arm.
Regards S

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