Quooker...is 110 degree water really ok?

[windyboy]

G3: ‘A hot water system that has a hot water storage vessel shall incorporate precautions to: (a) prevent the temperature of the water stored in the vessel at any time exceeding 100˚C’

Quooker: ‘The water is heated to 110˚C in the Quooker tank…When the water flows out of the boiling-water tap, the water cools from 110˚C to 100˚C and boils.

I like the idea of water cooling to boiling point. But seriously, am I missing something or do Quooker just ignore the Building Regs? (and the Water Regs.)

 

[Rob Foster]

So in simple terms there is the equivalent of a high pressure steam engine installed in a domestic kitchen , ok never in mine or my customers ever
I have read enough , just to peel a tomato ..seen it in tv huh !
This is a great place to learn and contribute thank you all let’s keep it up
Rob Foster aka centralheatking

 

[Chuck]

A couple of posts seem to be mixing up absolute and gauge pressures.

The boiling point of water is 110°C at 1.4 bar (absolute) pressure. Most pressure gauges, PRVs, etc. on plumbing, and most plumbers, use 'gauge pressure', which is the pressure above the local atmospheric pressure, so they would indicate ca 0.4 bar..

FWIW, I've seen first hand some horrific burns caused by relatively small amounts of very hot (not even boiling) water, and these gadgets make me very uneasy.

 

[windyboy]

Chuck is correct. The references to pressure in my last post were sloppy 🙁.

 

[dan_the_plumber]

Less than 15L, no check valve? Is slowed to expand back into cold main? Then G3 wouldn’t apply.
Stupid idea though, especially if you’ve got kids!

 

[CJfxdb]

Doesn't come under G3 as there isn't a tank ?

Yes there is a tank

 

[windyboy]

NHBC position on boiling water taps:

Boiling Water Taps | NHBC

Boiling Water Taps: Guidance for compliance with NHBC Standards and Building Control

www.nhbc.co.uk

Basically, if you have a Quooker, you won't get NHBC sign off without formal relaxion of G3 by the local authority. I have no idea if that could be got.