Post
by rosebery »
Tue May 27, 2008 10:37 pm
No it's not your fault from an installation POV.
The nice little provided flexi hoses reduce the pipe diameter down to 8 - 10mm. Restricts flow.
The 1/4 turn ceramic discs in the monoboc reduce flow further.
It's the flow rate that's poor!
These taps are specified for higher pressure systems. OK with a combi 'cos that runs off mains but carp with gravity system. That's why your cold is OK because it's mains pressure (probably around 3 bar). In the kitchen you probably have about 0.5 bar on the hot feed on a gravity system.
Min spec for tap (irrespective of flow restrictions with these designs) is probably about 0.5 bar - so you are operating on it's limit.
Sorry but I'm going to have to suggest that you replace it with a conventional tap.
Cheers
Part fitted a bathroom today (loo and WHB only - existing bath remaining.) Customer had pre-purchased nice monobloc mixer tap, although this did come with copper tails rather than flexis, with 8mm connectors. First thing I did was ring manufacturer. Apart from the floow rate issues tap required 0.5 bar to operate properly. In bathroom, with CWST mounted low down in roof, client lucky if they've got 0.2 bar.
Packed it up, took it back and swapped over form conventional tap.
Why