Connecting mains cold water to gravity cold water.

[MickBrown]

I have clients who live in a small cottage. Originally the kitchen was at the front of the house in one of the 2 rooms, the bathroom was upstairs at the back of the house and was fed by gravity hot and cold. At some time in the past a small extension was built at the back and the kitchen was moved in to this. The water supply for the kitchen was taken from the bathroom so the kitchen only has gravity hot and cold water. The owners would like the cold water to be changed to mains water. The simplest way would be to connect the rising main in the airing cupboard to the gravity cold and cap off the gravity cold from the tank. Besides the kitchen the gravity cold feeds bath and basin taps and toilet in the bathroom. The taps are low/high pressure taps and a high pressure restrictor can be fitted to the toilet inlet valve. The only problem is the loft hatch is so small I cannot get into the loft to cap the gravity cold there so it would be capped off where it comes through the ceiling, this would leave a short dead leg.

Can anybody see any problems with my plan?

 

[king of pipes]

Seems ok to me bud i would do the same the cold water storage tank will be drained as much a physically possible and isolated from any water supply cap off all the open ends you will be sorted cheers kop

 

[MickBrown]

Seems ok to me bud i would do the same the cold water storage tank will be drained as much a physically possible and isolated from any water supply cap off all the open ends you will be sorted cheers kop

Thanks King.

 

[jtsplumbing]

if you cant get into loft just run water till roof tank is empty and cap cold water close to ceiling

 

[ShaunCorbs]

You would have to cap the cold main to the tank but other than that your a go

 

[jtsplumbing]

You would have to cap the cold main to the tank but other than that your a go

Wont be able to cap cold main to tank its still needed for hot water cylinder

 

[ShaunCorbs]

Wont be able to cap cold main to tank its still needed for hot water cylinder

Won't be able to leave the tank live, risk of legionnaires

 

[Darren Jackson]

You needs to keep the tanks live for the rest of the house. So do not cap the feed to the tanks. "T" into the mains feed and connect it to the kitchen cold feed if you can and cap off the old gravity supply to the kitchen where it is convenient. But only if it does not supply other outlets.

 

[deg]

Won't be able to leave the tank live, risk of legionnaires

Tank is needed to supply the cylinder.

 

[Dkdc71]

Just cap gravity feed at sink and run a main in to kitchen tap and you are covered whoever done the botched job on the kitchen supplying it with a gravity feed was bad practice from the start kitchen sink should be mains fed and straight up to feed tank , if a bsm is fitted on bath or mixer on basin you could be contaminating the drinking water for your clients

 

[Gasinspect]

If they offer you a cold drink, say no thanks.