In the image below which way should I turn this nut to loosen, it is the
water inlet to an electric shower. It is heck of a tight and I dont want
to force it if going in the wrong direction. Up or down?
Nope, almost certainly down. Can't say for certain but our old shower unit
had a 15mm diameter plastic stub that you threaded a standard compressing
fitting over. The nut is threaded onto the brass elbow joint rather than
The OP just needs to look closely to see which side has the male threads.
I just don't get that. Look at the difference between the two nuts, the
one in the wall and the one connecting to the shower. It's a 'bent tap
connector', the shower plastic is threaded and there's a probably a
fibre washer inside.
I know there are showers which work the way you suggest, with a
conventional compression connector and olive, but I don't think this is
one of those.
The rule of thumb is that when looking at a nut or bolt from the open
side (in your example from the pipe side) anticlockwies to loosen,
clockwise to tighten. Using your labelling, that means up.
And which way was it?
Interesting that you got conflicting answers - probably because people
had difficulty identifying the type of fitting. I certainly did, and
wasn't sure which of 3 types it was.
1. Normal compression elbow fitted onto stub pipe from shower, with an
olive inside - in which case the nut would need to down by your definition
2. Elbow tap connector screwed onto a male threaded part of the shower -
in which case the nut would need to go up, or
3. Compression to Female Iron elbow with the FI end fitted to a male
threaded part of the shower. In this case, you'd have to undo the
compression bit against the wall first, and then rotate the whole
fitting anti-clockwise (up) in order to undo it.
Yes I was aware of the clock/anticlock for normal threads I just wasnt
sure if this was possibly a reverse thread for some reason.
It was down, the left brass side was threaded and the white plastic part
unthreaded, an olive was used on the plastic part so I presume a
The next part I will leave to the plumber to link up hot water to run a
shower off the combi boiler.
Do keep up Rick.
The OP knows about "righty tighty" but as you've clearly demonstrated, it
can be tricky sometimes to work out which fitting the nut should unscrew
(It was "down" and unscrewing from the brass right angle fitting).
The brass fitting is a 90 degree compression to tap connector. The end
partially embedded in the wall will be a normal compression fitting onto
the pipe. The end connected to the plastic threaded part on the shower
will seal with a fibre washer against the end of the plastic thread
sticking out of the shower.
Hence to undo the nut coupling with the plastic thread, turn it
anticlockwise while looking from the left side of your photo - or if you
prefer the front of the nut nearest you needs to go UP.
yes but not so many after the OP replied and said it was DOWN !
it really all depended if the plastic tail on the shower was threaded or
plane (to take an olive) the nut in question was quite ambiguous from the
Which is why it's wrong to emphatically say up or down. It's only close
inspection that will reveal whether the shower connection has male threads
or the elbow connection.
To me, and based on previous experience, it looked like a standard
compression elbow joint. My last electric shower had a plain 15mm stub for
connecting to. Hence I guessed "down" but advised close inspection.
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