On Oct 16, 9:46 pm, Ed Sirett wrote:
On Mon, 16 Oct 2006 21:01:46 +0100, John Rumm wrote:
Ed Sirett wrote:

On Mon, 16 Oct 2006 05:41:07 +0100, John Rumm wrote:

Ed Sirett wrote:

If you have something of a height drop on the hose you may be able to get
the hose 'syphon' or 'draw' much of the water out of the pipe work this
should make the installation of a drain point easier.

Or install a self cutting tap of the type used for washing machines as a
drain point.

... and use an old washing machine hose to drain the system... neat.

The hole made by these taps is pretty small - OK when fed with mains
pressure but as a draining method it might be quite slow. Or are you
suggest doing this as a one off prior to installing a more effective drain?

Just as a one off - many of them are pretty large an ugly for a
permenent fix, but they are easy to attach a hose to.

My own preference is to install a permenent hard piped drain through a
wall into a suitable gully, with a screwdriver operated service valve.
That way you can drain down cleanly and neatly without need of hoses or
leaking drain taps.

Agreed. And you can fill the system without bleeding. Then open the
valve(s) to do a pretty good "poor man's powerflush" using the air
pressure stored in each radiator to drive the crap out of the circuit with
attitude.

Please tell us more! How do you get enough air pressure in the
radiators.

MBQ