header tank and toilet both in attic

[crollorc]

hiya,

i'm planning a bungalow renovation where we intend to install an upstairs toilet.

i am hoping to feed this toilet cistern from a raised cold water header tank also located upstairs.

do you guys have any advise on doing this?

some particular queries i had are -
1) how high would the header tank need to be above the toilet cistern?
2) would any particular cisterns or cistern fill valves be better?
3) would a side or bottom entry fill valve be better (or make any difference)?

thanks for your help,

crol

 

[muggles]

Why not feed it off the mains?

 

[crollorc]

Why not feed it off the mains?

Because it will be full of rainwater.

 

[Burnerman]

The traditional Delchem cistern valve works the best with low pressure, I've found......Screwfix 88427 or 52836 with a 41/2" float, 76297.
Get the header tank as high as you can (completely above the loo cistern) and keep the pipe work as short as you can.
John

 

[gigz]

Why not feed it off the mains?

Because it will be full of rainwater.

Are you catching rain water to be used for flushing the loo ? If so how are you going to fill the header tank ? Sorry if these are stupid questions, but i've had a few Hic !!!

 

[crollorc]

Are you catching rain water to be used for flushing the loo ? If so how are you going to fill the header tank ? Sorry if these are stupid questions, but i've had a few Hic !!!

thanks for the tips.

rainwater will be collected in an underground tank and pumped up to this header tank which will also have a mechanical mains top up valve in case no rainwater is available.

crol

 

[crollorc]

The traditional Delchem cistern valve works the best with low pressure, I've found......Screwfix 88427 or 52836 with a 41/2" float, 76297.
Get the header tank as high as you can (completely above the loo cistern) and keep the pipe work as short as you can.
John

thanks for your help john.

do those valves come with a low pressure flow restrictor?

also, would a side or bottom entry fill valve be better (or make any difference)?

crol

 

[Burnerman]

It doesn't really matter which valve you use, just keep the bends etc to a minimum. The valve could well come with a push in flow restrictor (spiral plastic thing) but you won't need that.
An in line filter could be an idea though as any valve doesn't appreciate any particles of grit etc.
Enjoy your project!
John