Plumbers NZ is New Zealand's largest online plumbing, gas and drainage resource. Plumbing exam help, plumbing news, directory and free quotes.

low pressure hot water

« low hot water pressure in one tap. | Low shower flow »

0 Members and 1 Guest are viewing this topic.

Print
Go Down Pages1
User actions

myles

March 05, 2012, 07:28:21 PM
Hi plumbers,


I have the same problems as meny others in this forum. reallllly low hot water pressure.

we have just brought a house really old with really old plumbing, it has a low pressure (well i think its a low pressure) rheem alpha hwt with a coal range wet back and a header pipe thats probably 5m from the top of the tank at the most. also has a header tank. The hwt doesnt have a sticker i can see on it to say how high the header pipe can go??

i have been asking around and have been told that getting rid of the header tank and getting a "ajax" valve on the inlet and making the header pipe higher might help?

is this the case and or would a low pressure water pump on the outlet (was looking on trademe) help?

thanks for any help,     myles






Linkback: https://forum.plumbers.nz/q-and-a-water-pressure/50/low-pressure-hot-water/1031/
    Share Post |

myles

#1
March 05, 2012, 07:39:47 PM
correction""

"header PIPE thats probably 5m from the top of the tank" not header tank!!!
    Share Post |

Plumber

#2
March 05, 2012, 08:37:34 PM
That is certainly an option just need to be careful what else the header tank feeds before its removed. Most plumbers offer a free quote and advice on what solution is the best in your situation click the link below and get a few quotes in your area. A site visit by a qualified plumber is definitely required to give you reliable advice.

http://www.plumbers.co.nz/business/
    Share Post |
Please note that the advice I am giving is only my opinion and not necessarily a fact.  Please refer to our terms and conditions.

myles

#3
March 06, 2012, 04:40:06 PM
cheers, header tank only feeds the hot water cylinder. would just making the header pipe up to its maximum height make any difference?
    Share Post |

myles

#4
March 06, 2012, 05:57:44 PM
oh and the hot water pipes running through the house are galv steel, i have also been told that they corrode and block. is there anything (chemicals etc) that i can flush through them to make sure there not blocking water pressure and flow? 
    Share Post |

integrated

#5
March 06, 2012, 06:49:06 PM
I would keep the header tank - I think people are all to quick to get rid of them...


nothing wrong with having a reserve of water in times of need...

I would suggest hot water boost pump - they work best with a header tank and the benefit is you wont put any additional strain on that old HWC like you would if you went to a PrV setup

those pumps on trademe are ok - just a bit noisey - have tried and tested a few - cant beat the grundfos/wilo bronzes IMHO

you should see immediate result with either, but I would suggest replacing as much of the galv as you can - any additional pressure on pipe runs risk of prematurely failing the pipe - just something to be wary of..

as suggested a plumber on the spot to inspect will give a much better idea...
    Share Post |

myles

#6
March 06, 2012, 08:59:22 PM
Awsome thanks for that.

will get a plumber to have a look, hope we dont have to redo the piping its all through the walls, theres no room under the house  ???. 

    Share Post |
Print
Go Up Pages1

* Share Topic

Share via digg Share via facebook Share via linkedin Share via twitter
User actions

Share this topic...

In a forum
(BBCode)
In a site/blog
(HTML)

Similar topics (5)