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Cable or pneumatic cisterns

Does what it says on the tin
DrFfybes
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Cable or pneumatic cisterns

#228205

Postby DrFfybes » June 9th, 2019, 11:04 pm

I have a Geberit pneumatic cistern in the built-in units. Model 109.720.00.1

Geberit have a 'push-fit' L-pipe into the pan AND at the cistern end, which moves over time and then leaks. They are pretty renowned for it, so rather than spend £6 (again) replacing the seal and have another stain in the ceiling below, I thought "Begerit" (see what I did there :) and decided to replace the cistern with one where the exit tube has a positive seal tightened up by a threaded nut.

The current one is bottom fed and is on the left and copper directly to the cistern inlet. I want to avoid running too much pipe and keep a bottom or left entry unit that I can connect either directly or by shortening the existing one and a short flexipipe connector,

I want to keep the existing pneumatic button (60mm cutout, 70mm front ring).

Anyone recommend a bottom left entry cistern with pneumatic actuators and a locking seal nut on the outlet?

thanks

Paul

bungeejumper
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Re: Cable or pneumatic cisterns

#228580

Postby bungeejumper » June 11th, 2019, 8:45 am

Sorry to see you haven't had a response yet. I imagine we're all stunned into terrified silence by the thought of a bottom entry toilet?

BJ

(Ob serious comment): I loathe and detest all push-fit pipework, especially in locations where a plastic pipe might sag and loosen. The work of the very devil. :evil: Never use anything but copper, which is neater anyway. I've seen flexible tails used on a toilet, but they also fail the neatness test. Harrumph.

I'm pretty sure that your local plumber's merchant would be your best bet, because (unlike Screwfix) it would be a hands-on experience. Take photos and precise measurements of your cistern, because the cheap Chinese ones like ours can be a law unto themselves. Don't ask me how I know...….

BJ

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Re: Cable or pneumatic cisterns

#228611

Postby 88V8 » June 11th, 2019, 10:18 am

The last cistern I installed was cast iron. The internal workings consisted of a big cast-iron bell. It was of the type known as Pull-and-let-go.
Pre-war, never fitted, I bought it from a retired plumber in 1991.
It was connected to the pan by 5ft of lead downpipe, dating from 1920.

Eschew complexifications, I say.

When I was in our plumbers' merchants last week, they were trying to encourage me towards push-fit. No way, Jose.

This has some sort of screw thingy on the outlet
https://www.ebay.co.uk/itm/Air-Pneumati ... Swj4VcywRv
but it's alarmingly inexpensive.

V8

DrFfybes
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Re: Cable or pneumatic cisterns

#228674

Postby DrFfybes » June 11th, 2019, 12:43 pm

88V8 wrote:This has some sort of screw thingy on the outlet
https://www.ebay.co.uk/itm/Air-Pneumati ... Swj4VcywRv
but it's alarmingly inexpensive.

V8


Thanks,

That does look like what i am after, right size (when i looked it up), correct entry point, pneumatic dual flush, positive seal on the bottom, and the flap on the front looks actually large enough to access without needing a mirror and a small child.

It is quite cheap, although the manufacturer lists it at double that. There's a very local firm listed as a distributor, and they will sell me the unit and a button the same size as existing for £70.

I see the newer Geberit ones still have the push fit pipe, but have a bracket included to clamp the flush pipe in place. Our installer used a wooden batten to support it, held in place with bath sealant, because what else would you use for fixing a wooden batten inside a laminated wooden cabinet?

Paul


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