How bad? High pressure tap with low pressure system

[Yazar]

Quick question- how bad is a high pressure kitchen tap on a gravity system? My cold is 3 bar mains and hot water from gravity is dropping from loft to kitchen.

Reason for asking is I have seen a tap on offer but is listed as 2 bar minimum, as I'm moving to an unvented system eventually how bad would it be on a gravity system in the meantime??

Majority of dishes are washed by dishwasher if that helps.

[98elise]

It will be stupidly weak. I've struggled to get a decent flow from LP rated taps. If they are rated for HP then they will be terrible.

[g7jtk]

It wil be poor

[Gren]

Came a cropper with this only yesterday. Having our bathroom refitted and I'd unknowingly bough high pressure taps. Fitter point blankly said they needed to be changed. Wouldn't even fit them to see what it was like as he said they'd be useless and then we'd have trouble returning them.

Luckily managed to source a set of similar low pressure ones that I'm picking up later

[AlRaven]

Dafty question but how do you know if you've got low or high pressure?

[Simpo Two]

Yazar said:

Quick question- how bad is a high pressure kitchen tap on a gravity system? My cold is 3 bar mains and hot water from gravity is dropping from loft to kitchen.

Reason for asking is I have seen a tap on offer but is listed as 2 bar minimum, as I'm moving to an unvented system eventually how bad would it be on a gravity system in the meantime??

It will be useless. A two-storey house with gravity-fed water will be adequate up to 0.4 bar at most, ideally less.

AlRaven said:

Dafty question but how do you know if you've got low or high pressure?

Typically, a cold water header tank in the roof and a hot water cylinder in the airing cupboard.

[Yazar]

Thanks guys. A shame as a screwfix deal of the day tap was £50 quid off. Phoned up within an hour of ordering but 'computer says no' means can't cancel till it arrives at the store for collection.

So if anyone wants one of the below (price minus £50 quid) and are willing to pickup/pay for postage than its yours. But you have only have untill 12 noon ish today as will be going into screwfix later so will be getting refund then.

http://www.screwfix.com/p/bristan-target-pull-out-...

[AW10]

We have three sets of high pressure taps in the bath/cloakroom basins. Two of them are gravity fed for both cold and hot water and the flow is fine for cleaning your teeth and washing your hands. The third set is plumbed in via the shower pump so the pump runs when the tap is used. Pain in the *rse at night so have taken to putting the shower pump on a time so that it runs only from 05:30 to 14:00. Flow through that tap "out of hours" is still adequate for teeth/hans despite flowing through the non-running pump.

But no way would I want a high pressure tap in the kitchen on gravity fed hot water - washing up would take ages.