Taps that claim to be suitable for both high and low pressure systems

[freckles]

Hi, I have a low pressure system and want to replace the mixer tap in my kitchen. Most of the taps I see on sale say they suit both systems. Is that really true? Also, is it better to use a ceramic filter, or not, I wonder? The one I'm replacing is over 30 years old. Any thoughts welcome!
Thanks.

 

[Stuart981]

Best way is to run a new cold water pipe from the header tank to the cold side of the mixer.

 

[terryplumb]

Best way is to run a new cold water pipe from the header tank to the cold side of the mixer.

Kitchen tap would be fed with mains pressure cold water,not from a header tank.

 

[freckles]

Thanks, though I think that would be too much work in this scenario.

 

[Lower]

Best way is to run a new cold water pipe from the header tank to the cold side of the mixer.

Do you really want tank stored cold water as your kitchen supply?

 

[freckles]

Really what I'd like to know is- will a tap that claims to suit low and high pressure systems genuinely be ok for a low pressure system, or should I only consider one that only suits a low pressure system. I'm maybe a bit too sceptical! Hope that makes sense.
Thanks.

 

[endecotp]

will a tap that claims to suit low and high pressure systems genuinely be ok for a low pressure system

You probably have a “mixed pressure system” at your kitchen tap, i.e. hot is low pressure, cold is direct from the mains. (Right?)

Taps do exist for that and do work. I think there are two channels all the way to the spout, so there is no mixing in the body of the tap.

 

[freckles]

Yes, I think that's it. That sounds hopeful, I appreciate your help.
Thanks

 

[Madrab]

Depends on what they classify as a low pressure system, most will provide a min pressure that the kitchen tap will function properly with.

If they state 0.2bar then that is more classed as low pressure, if they quote >1bar then that's into high pressure territory.
As a rule of thumb any tap that is describe as a dual flow - i.e - hot and cold mixes in the spout - are more suited to a lower pressure systems where the hot water is fed from a cylinder that is supplied by a Cold water cistern, typically in the attic and the cold should be mains.

Other tap types - monobloc/mix in the tap body are more suited to mains (high) pressure balanced hot and cold supplies, as they use cartridges/ceramic valves, have narrower waterways and typically mix in the body of the tap.