Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

Low running hot water from all hot taps. why??

View the thread, titled "Low running hot water from all hot taps. why??" which is posted in Bathroom Advice on UK Plumbers Forums.

R

rui7

Hi,

We have three bathrooms upstairs. All the sinks have uni-taps (runs both hot & cold water). The cold water flow is fine but the hot water from has been decreasing steadily over the past year. The showers hot and cold water flow is working fine.

We have a cold water storage tank in the loft and and copper cylinder tank in the hot press. The hot water is fed off the top if the cylinder tank.

Im presuming theres a separate pipe feeding off the cylinder for the showers and the problem lies with the pipe thats feeding off the cylinder for all the hot water taps upstairs and downstairs.

I dont think theres a problem with the taps themselves as when I first turn on the taps the flow is fine but then slows down. This suggests theres nothing wrong with the taps and the problem lies somewhere within the piping from the sinks back to the cylinder tank.

Am I right in saying the pipes could be coated with scale/sediment and thus reducing the flow of hot water or would it be something stuck within the piping? What are the remdedies and would this be an esy job to fix (DIY)??

Thanks,

Rui
 
you will have to back trace the pipework. the feed to the hot cylinder goes in the bottom of the cylinder maybe with drainoff on it, just follow it back up and you may be lucky and have a gate valve. although it may be up near the cold tank.

just had another look at the pics. to the right of the hot feed/vent is the cold feed to the cylinder it has a gate valve but without it's red handle. you can borrow the handle off the other larger gate valve to see if you can move it at all.
 
Last edited by a moderator:
i see what ye mean, yeah if i remember correctly when i changed the element last year i used that valve to shut off supply to the tank. so if I shut that valve off, that will shut off the feed to the hot water taps. its starting to come together now!
 
the cold tap flow fully stopped when i closed that valve fully but the hot tap flow continued to flow. The cylinder is very hot at the moment. Could it be that theres hot water in the cylinder and its continually expanding out from the top of the cylinder?
 

Official Sponsors of Plumbers Talk

Reply to the thread, titled "Low running hot water from all hot taps. why??" which is posted in Bathroom Advice on Plumbers Forums.

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Thread statistics

Created
rui7,
Last reply from
rui7,
Replies
42
Views
3,596
Back
Top