"White Spirit" wrote

soup wrote:

My son has asked me to put a tap in to drain his trough (it is filled
with stones, plants sit on top of the stones and water).
Are there any 'kits' around to do this, has anyone done this using off
the shelf plumbing parts are there any 'gotchas' I have to look out for?

I have a LOT of water to clear. Glove should give some idea of scale,
stones scraped out of the way to try to illustrate just how much water
is in this thing.
http://postimg.org/image/q8g7gfu7l/

Where I intend to mount the tap (hadn't realised just how grotty the
Greenhouse had become).
http://postimg.org/image/s0p76dz4x/

People involved in home-brewing sometimes modify barrels to add taps to
them and it is easy to do; once you have drilled the hole through, you can
add the tap via a bung. There might be better, more permanent ways of
achieving the same thing, of course.

The problem as I see it is that the wooden box is lined with polythene to
keep the water in. You need a tap that will connect to the membrane and seal
it whilst having a long enough thread to pass through the wood. Whilst I
don't know the thickness of the wood it looks like a normal outside tap
would not have a long enough length of thread with the necessary large
washers to stop leakage.

Sealing the membrane with a large washer and some suitable sealant should
work.
--
Regards. Bob Hobden.
Posted to this Newsgroup from the W of London, UK