Which cistern urgent pls

[canalsiderenovation]

We have this unit and have a leak. Urgently need to replace the cistern.

 

https://www.victorianplumbing.co.uk/hudson-reed-solar-550mm-wc-unit-matt-fern-green?srsltid=AfmBOooFSS5a9j5JGYjAoVXQIfcW8DWhd5u1vC7X9Usz1vWVbe0tH0ONtT8

 

Can anyone tell me which cistern from screwfix or toolstation is compatible pls?

 

[ProDave]

WHERE is the leak?  Why can't the existing cistern be repaired. that is likely to be easier.

[canalsiderenovation]

Victorian Plumbing have said it is this one but ideally I need to get it today or tomorrow from Screwfix or Toolstation.

 

https://www.victorianplumbing.co.uk/venice-concealed-wc-cistern-with-wras-sensor-flush

 

We think it it is the seals but frankly now it is all off the wall and everything off we may as well replace it now to avoid any future issues. It has been leaking a while and the water has swollen woodwork on the unit too.

Edited yesterday at 13:09 by canalsiderenovation

[ProDave]

This one looks like it will fit, but check carefully that the dimensions are no larger than the actual one you have before buying one.

 

https://www.screwfix.com/p/etal-porto-dual-flush-concealed-cistern-4-6ltr/110vn#product_additional_details_container

 

I was mainly looking at size, but if it does fit, then at that price I would buy 2, and keep the spare in the loft for next time.

 

EDIT  it is more important to measure the unit it has to go in. there are others on SF that are wider than the one you have, but that does not necessarily mean they won't fit.

 

Post a picture of the empty unit and measurements please.

[saveasteading]

Pretty well any cistern should do. It is a very primitive connection... just an open pipe below the cistern into the hole in the pan.

That connection is likely the problem anyway so look at the rubber seal that came off with it as homework... does it look distorted or perished?

The new cistern probably won't have this seal so you need a new one, and should change the screw fixings too.

I messed up this connection the last time I changed one and had to start again, ( the seal ring wasn't neatly on the cistern outlet). so check it all fits neatly without clashes with fixings, threads etc on both parts.

[canalsiderenovation]

Its this bit black rubber..

 

 

 

And that kit from Screwfix looks like it will fit and has the otherseal but we will double check the measurements...

 

Measurements of unit

 

[ProDave]

Check your cold feed pipe location.  Most concealed cisterns have bottom entry but looking again at your picture yours appears to be side entry.

 

@Nickfromwales are you thinking of the donut on a close coupled cistern?  I think this is a back to wall pan against a ready built unit with concealed cistern and a flush pipe.

[Nickfromwales]

You don’t need to change the cistern.

 

Just get some good old CT1 and fit this one back in properly.

 

Those big rubber washers get put in dry by most, and go the distance, but if they’re not put in right first time obvs they leak.

 

Clean all components and dry everything off. Then rebuild with CT1 as the saviour, either side of that washer, on all joining faces, and do not over tighten it when reassembling.

[saveasteading]

10 minutes ago, canalsiderenovation said:

Its this bit black rubber

That is what they look like. But I think it should be on the outside of the tightened screw for full contact with the pan.

Let's see the pan and thr fixings that came off, for certainty.

Btw I'm only expert in this through getting this wrong, then right... if any proper plumbers want to correct me that's fine.

[saveasteading]

2 minutes ago, Nickfromwales said:

do not over tighten

Or undertighten.

 

Actually I found that the clamping lug screws had to be surprisingly tight to ensure their seals.

[canalsiderenovation]

Here are some photos.

 

Dad doesn't think the waste or toilet was fitted on properly either but it in fairness it is in the Airbnb and had not been used really til June this year so obviously been leaking since then.

 

Water to toilet is now off so for now panic over and dad is going to sort after xmas once we have sorted stuff.

 

 

 

 

[ProDave]

Yep that's a back to wall pan with a flush pipe.  NOT a close coupled pan with a donut and a clamp to pull the cistern down onto the pan.

 

If you choose to change the cistern, probably best to use the existing flush pipe that is already cut to length.

 

You assemble the fill valve and flush valve into the cistern and fill the cistern with water before you fit it, so you can leave it a while and check it is not leaking from either the fill or flush valve,  if all is well empty it and continue fitting.

 

If it then leaks it must either be from the flush pipe at either end, OR the waste pipe coming out of the pan if the pan connector is leaking.  

[Nickfromwales]

This just needs a decent clean down, and a rebuild.
 

Unless there’s a crack in the plastic, or the flush pipe was originally cut too short.

 

If it leaks whilst flushing it’s either from the connection under the cistern, or at the conical washer that pushes into the small hole in the pan.

 

I sometimes put a block of packaging type polystyrene behind the flush elbow, grid in place with some tape, so that when the pans offered back into the flush pipe it can’t move backwards.