"Matthew Thomasson" wrote in message
om...
I'm installing a grohe shower mixer.

The outlet that connects to the shower hose is an elbow which screws
into a half inch fitting mounted in the wall.

I'd intended using a half inch to 15mm elbow coupler (in the wall)
back to the mixer outlet.

But when screwed fully together the (15mm to half inch) coupler that
connects back to the shower outlet is left at an unusable angle.

The only way I can see it working is by not fully tightening the two
connections, but this would cause a leak ? What point am I missing
something ?

Any help appreciated.


Ahh! This is a gem. I have been in debate with a (nameless) major
manufacturer of these shower valves about this exact problem for some time
now.

Basically, with a bar mixer, you want it level. So, you spend ages making
sure that the elbows etc that fix back to the wall (ones for mounting
outside taps are best for this) are perfectly level and the required
distance apart.

Then, you screw in the 'cranked' connectors and find that one tightens a
different amount to the other and by nature of them being cranked, one can
be left, say, in the 12 o'clock positon, whilst the other is in, say, the 6
o'clock position. The result is a non level valve.

First, do not think about putting them in loose. you will get leaks. Don't
try to pad out with extra washers either - they will leak.

You can try using loads of PTFE and brute force (I have done this before)
and it should work. Try a few different elbows at the plumbers merchants to
find which tighten the same amount.

Anyway, after much debate with the said manufacturer, who incidentally say
they issue cranked connectors for use in the rennovation market, where a
plumber might be trying to fit a new vlave to old plumbing with differing
centres (******** IMHO), they told me they do sell straight connectors,
which eliminates the problem at a stroke. Why on earth they don't issue
them as standard I just don't know. I've fitted a few of them now and no
problems to date.

Hope that helps.
Rob

--
Tel. 07010 703 702

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