Unvented cylinder

[eagleeye]

Been to a friends house today to sort a leak on the heating system and while there he told me that there was a leak on an immersion on the cylinder. When I opened up the cupboard what I found I was shocked. He has a Gledhill stainless lite cylinder and next to it a massive expansion vessel. Well thats what it seems like. This is my question as I have never seen anything like it for a standard size house. It is a Zilmet Ultra Pro. He tells me the plumber told him it was to boost the water pressure but im sure its just a rather large expansion vessel. What are your thoughts please

 

[gassafe]

Looks like an accumulator...

 

[IDCHAPPY]

As above, a expansion vessel that size could do a hotel :lol:

 

[Meady]

He must of had some pretty poor pressure if he needed that, we've fitted them before but in a block of flats and only to those property's above the 4th floor

 

[Ermintrude]

Well fitted! Nice insulation and restraining equipment

 

[TBServices]

It's an accumulator. Basically a huge expansion vessel.

 

[eagleeye]

An accumulator I thought but going by the website its saying its a pressure vessel but under the heading expansion vessels. Zilmet | Expansion Vessels | Potable water | Ultra-Pro | 

And yes I agree a vessel this size could do a massive hotel

 

[TBServices]

That's all an accumulator is.

 

[eagleeye]

Pressure is very good at kitchen sink on cold. Its piped up after the prv combi valve with a tee in feed to the cylinder, runs along to the bottom of this vessel, tees into it then it seems like the cold feed to bathrooms come out the tee. Surly this just aint right. Why not just a standard 18 ltr vessel

 

[Ermintrude]

Apart from water is in balloon unlike a heating tank. Not seen it yet but awaiting the day in hall of shame when 45 20l red tanks in parallel feeding a 300l UVHC on a 12mm 5bar 0.2 lpm service

 

[Mike Jackson]

As has been said it's a potable expansion vessel being used as an accumulator. Pressure may be good at the kitchen tap but there may be problems with flow rates when multiple outlets are used. It's obviously been fitted by someone who cares about giving a customer good service.