Trickle :(

[xant14]

Hi,
First thread here, I need help.
I have done my bathroom up, and to keep it clean looking took the hot n cold pipes thru the loft and down to the basin.
My gravity fed system, my hot tap just dribbling.. Tried to bleed (suck the tap) but no good.

A diagram here

Tap Schematic

• xant14
• 25 Feb 2017

So, a few questions, bearing in mind I know about hindsight.
How can I sort this out?
At point B, would a vent help? to keep the head level?
At point A would a non return valve help bleeding problems when the downstairs tap is used?

Could I insert a pump at any of these points?

I know the ideal is to run a new line down and up to the tap but I have installed flooring and tiles now.. not impossible, but not ideal.

Thanks X

 

[flameport]

my hot tap just dribbling.

Are these new taps? Some are not suitable for low pressure.

 

[xant14]

Hi
Yes, http://www.tapwarehouse.com/product...-mixer-dg009?gclid=CMKlx6Pzq9ICFQqdGwodkrcPQg
I didn't think the tap is the problem? I was thinking more my pipe routing. The cold water (mains fed) is fine.
The speil says 'good for low pressure'.
Thanks for the reply

 

[picasso]

Your going to have to fit a negative head pump, it would be better if you could do the hot and cold (mains pressure and pumped supplys don't mix well)

 

[xant14]

Could I fit a single pump? just for hot water?

 

[picasso]

Yes of course but as I said you will have mains pressure @ "some" pressure and hot water at say 1.5 bar, all it takes is a stuck nrv and you got water peeing out the overflow, up to you.

 

[xant14]

Thanks for the reply picaso,
nrv= non return valve? at the moment there isn't any in.. AND there is no overflow on that line as such.
would it need one with a pump?
Where would the ideal place to fit a single pump? down from the feed, A ish? or up in loft B?
If a pump is fitted would it deffo need a nrv?

 

[picasso]

Sorry mate you misunderstand, I am saying its NOT a good idea to fit a single pump, if your going to do it do it right and fit a twin pump feeding the hot and cold in the bathroom with equal pressure supplies.

 

[xant14]

My shower has a dedicated Stuart Turner pump, fed from a cold water tank and the hot water tank. My basin I decided not to use the pump, just mains cold and gravity fed hot water. I just need to boost the hot water to the basin, somehow.. or re-route the pipes and curse every time I walk into the bathroom and see them. Any other answers or solutions anyone?

 

[Burnerman]

Seriously, how difficult would it be to move your hot supply under the floor of your bathroom, and then returning up the pedestal to the tap? Disturbing tiles or whatever fills me with dread but it's a certain way out.
John

 

[picasso]

Wont be happy till a pump is fitted, then a pressure reducer to try and equal the pressure, then realises he needs a negative head pump because there aint enough flow then a couple of nrvs and eventually the penny drops, should have moved the pipe in the first place.

 

[Steelmasons]

Any other answers or solutions anyone?

You have been given the correct advise , now apologise for your rudeness towards Picasso.

 

[xant14]

Seriously, how difficult would it be to move your hot supply under the floor of your bathroom, and then returning up the pedestal to the tap? Disturbing tiles or whatever fills me with dread but it's a certain way out.
John

Under the floor is not an option now. New floor down, I could take off bottom row of tiles on one wall and chase it in. Looks like that is one answer then.
I didn't realise I was rude to picasso. Sorry if it come over that way. I was just hoping there was an answer without ripping up work I had already done.

I guess also I could just tee in from the shower circuit in the loft? didnt want the pump coming on every time I brushed my teeth tho.

 

[Echo the husky]

I assume there are no small bore isolation valves or flexible tap tails fitted to the pipework?

 

[xant14]

I assume there are no small bore isolation valves or flexible tap tails fitted to the pipework?

Yes to both. The small bore isolation valve just below the flexy tap tails.
I am gonna run a new pipe now.