On Wed, 29 Oct 2003 17:27:39 +0000, Andy Hall wrote:

On Tue, 28 Oct 2003 23:04:56 +0000, Dougie Nisbet
wrote:

[ ... ]

The easiest way to flush the system is to introduce mains pressue via
the filling loop at the boiler. I've tried some localised flushing by
connecting hosepipe to the mains tap directly to the rail. But I'm
coming to the rather depressing conclusion that I have, to use the
rather unsavoury Izal toilet paper analogy, just move the yck around a
bit.

This is true. Do take care that you don't start pushing gunk into the
boiler as you do this.


I'm trying not to. There are two taps directly underneath the boiler that
I can use to isolate before I start my adventures.



I've ordered a bunch of
https://www.screwfix.com/app/sfd/cat...80920&id=11074 rad
valves wbich I think will make my life easier in the long run.

Try to get the Pegler Terrier 367 lockshields with drainoff.
Unfortunately Screwfix don't seem to have them, but Plumb Center do as
part number 250291

http://tinyurl.com/svif

These have the drain (more neatly) inboard of the valve. The effect is
that you can turn off both valves at the radiator and drain it. Or by
judicious opening of the valves use it as a flush out point for the
pipework or pipework and radiator.



This approach appeals to me a lot. I think I mentioned somewhere else that
the plastic 'branch lines' for the rads was 15mm. I was wrong. I
discovered this when my box of 20 drain off valves arrived from Screwfix
this morning and I held one up to the radiator to compare. One or two
enthusiastically expressed expletives later and I thought it'd probably a
good idea to measure the diameter of the plastic pipe - which is 10mm. I'm
not quite sure how I stand with Screwfix with my box of probably useless
valves - I've dropped them an email to see if they'll take them back.

I'm looking at the Peglers you mentioned. Are they expensive or what? Are
you thinking along the lines of http://makeashorterlink.com/?Y3F842066 -
and is it really nearly 12 quid each? It raises another question which is
probably blindingly obvious to most people and I think I can work out the
answer to but would appreciate confirmation: the numbers in the
description - 10mmx1/2 - is the 10mm the diameter of the pipe, and 1/2 -
what's that. 1/2 inch. Is that the diameter of the radiator socket? I
don't want to go and order the wrong thing again.



.andy

To email, substitute .nospam with .gl

Dougie