Very little water flow from any ‘hot’ tap in the house

[Max Tout]

Very little water flow from any ‘hot’ tap in the house i.e. bath tap, bathroom sink tap and kitchen tap; just a slight flow that stops after a minute or so. Been working fine but virtually stopped flowing this morning.

The house has a conventional vented CH system with a cold water storage tank in the loft and a hot water cylinder (with immersion heater) in the airing-cupboard.

The 22mm outlet feed pipe from the loft tank to the hot water cylinder isn’t blocked at the loft tank end; had a thin copper rod down a few inches and a had wriggle about ,but no joy.

Any thoughts where the most likely blockage point will be? I’m assuming (maybe wrongly) that debris of some description has entered the system.

All advice gratefully received.

 

[rocketmanbkk]

Air

Trapped air

 

[Simon F]

could be air,
a wet vac on hot tap could sort it either way.

could be somthing has gone down the cold pipe and is stuck at a bend??
or an issue with the isolation valve on the cold pipe down to the cylinder.

I would progress the search to that tap, close it, open hot taps, undo bottom fitting to valve, lift pipe clear from valve, with a bucket ready open valve and see.
(assuming a valve is fitted and working!)

 

[rocketmanbkk]

Air, trapped air

Wet vac the bugger as Simon says, suck it out

 

[Phil]

Has anyone been messing around? say in the airing cupboard or loft? Has someone turned off a gate valve by mistake? If you so much as look at them they shear off...

 

[rocketmanbkk]

The op likes your post Phil!!

He hasn't bothered responding though!

Is it fixed or not?

I'm out

 

[Phil]

I'm off for a shower I stink...I've fitted more showers than I've had this week. Just no time....

 

[Max Tout]

OP here; many thanks for the replies..

I’ve just found out that the loft water tank also supplies the ‘cold feed’ to the bathroom power-shower; .....so maybe the loft tank did run dry and an air-lock has been introduced ??

 

[rocketmanbkk]

Maybe

If that's the case it may happen again & again unless it's sorted out

Bigger cwsc in loft?

 

[Max Tout]

The op likes your post Phil!!

He hasn't bothered responding though!

Is it fixed or not?

I'm out

....sorry if you thought I was taking anything for granted; I will always respond and say thanks to you wonderfully knowledgeable people! :santa:

P.S. nothing fixed yet;....regroup tomorrow a.m.