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Here's one I should have done earlier, I know. But we are where we are.

 

A drain down depends on gravity doesn't it? So all the piping that's below the level of the drain cock level (no rads have drain points) will still be full.

 

So - just a thought - what if I turn the circulation pump on for a minute or two to 'force' the bottom few centimeters of water out?

Switching the pump on for a minute or so, will I knacker the pump?

Any Welsh plumbers on the board will be most welcome to answer.

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Solution. Put the drain cock at the lowest point.

 

 

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What is going to force the bottom few cm out? Only water coming from behind, air might do it but not sure how much air you can move with the circulation pump and running it dry is probably a big no no. Best thing is to cut the pipe and install a drain cock at the lowest point. PS I suppose you might such it out of you have a wet vacuum cleaner.

 

PS crossed in time with @ProDave

Edited by MikeSharp01
post crossing

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20 minutes ago, ProDave said:

Solution. Put the drain cock at the lowest point.

 

The last guy to live in this house was a plumber. Cobbler's daughter worst shod ....

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I would attach a wet and dry vac and try sucking the water out of the drain valve. Might take a bit of time but could work well

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If there's only a few inches left in the sumps then won't the pump already be dry ?

Get the worst out, crack the rad valves and drain into little flexi tubs and then change the locksheild rad valve to one with a combined DOC. Why power flush ? Do they get hot slowly / unevenly ?

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35 minutes ago, Nickfromwales said:

[...] one with a combined DOC. Why power flush ?[...]

 

DOC?

Why power flush? It looks like fun

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3 minutes ago, Nickfromwales said:

[...] Haven't you a castle to construct ? :P

 

Not on Saturdays. Debbie's list of Jobs-For-Ian-To-Do is getting too long. Need the Brownie points

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2 hours ago, Nickfromwales said:

Happy wife, easy life.

Discuss.... Although the definition of 'happy' and 'easy' are difficult to define cleanly in this context specific space it is superficially possible to see that this idea has some merit if you are the 'wife' (please be aware that I make no allusion to gender here or in any other part of this discussion - any inferences are at the readers discretion) but that for the pleaser, the one trying to bring about happiness in the other, at least there must be effort involved. Let us assume that Happiness (H) is proportional to pleasing (P). However the whole equation might be drawn thus:

 

Hw = El where Hw = some function of P.

 

So Hw = f(P).

 

One is therefore forced back onto what economists would call the cost / value equation at least in this first portion of the factored equation where the proportionality function needs very thorough understanding. This because the units deployed on each side of the basic equation (expressed as a function here) seem to have the propensity to be very different. How much 'pleasing' is required to bring about a quantum of happiness and in what units EG radiators drained / doors stripped /  etc is this quantum measured. Inevitably this is set against the notion of 'easy' and it's unit's of measure EG new tools purchased, meals prepared, hours of TV watched, undisturbed time in the workshop or perhaps conjugal favours offered. However on this latter point and expanding now to the full 'Hw = El' equation one might, in particular circumstances, find similar units of measure on both sides of the equation -  making the wife happy might actually be enjoyable for you and thus defeating the base sentiment of the starting equation. Where it true it would require some adjustment to the equation to ensure that it was reversible although doing so has difficult overtones IE El = Hw. From this standpoint of common factors (units at least) on both sides of the equation one might further argue that that if it were possible to find and undertake sufficient activities common on both sides of the equation with - of course, adding in the concept of a fully reversible equation that the problem might be made to disappear as the spiral of bliss moves all parties into a state of ecstasy. There is evidence that this occurs in many partner based relationships know colloquially as Love. Given this we can conclude that draining the radiators is a function of the easy life and the happy wife only asked you to drain them because they want you to have an easy life - QED.

  • Haha 1

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7 minutes ago, MikeSharp01 said:

Discuss.... Although the definition of 'happy' and 'easy' are difficult to define cleanly in this context specific space it is superficially possible to see that this idea has some merit if you are the 'wife' (please be aware that I make no allusion to gender here or in any other part of this discussion - any inferences are at the readers discretion) but that for the pleaser, the one trying to bring about happiness in the other, at least there must be effort involved. Let us assume that Happiness (H) is proportional to pleasing (P). However the whole equation might be drawn thus:

 

Hw = El where Hw = some function of P.

 

So Hw = f(P).

 

One is therefore forced back onto what economists would call the cost / value equation at least in this first portion of the factored equation where the proportionality function needs very thorough understanding. This because the units deployed on each side of the basic equation (expressed as a function here) seem to have the propensity to be very different. How much 'pleasing' is required to bring about a quantum of happiness and in what units EG radiators drained / doors stripped /  etc is this quantum measured. Inevitably this is set against the notion of 'easy' and it's unit's of measure EG new tools purchased, meals prepared, hours of TV watched, undisturbed time in the workshop or perhaps conjugal favours offered. However on this latter point and expanding now to the full 'Hw = El' equation one might, in particular circumstances, find similar units of measure on both sides of the equation -  making the wife happy might actually be enjoyable for you and thus defeating the base sentiment of the starting equation. Where it true it would require some adjustment to the equation to ensure that it was reversible although doing so has difficult overtones IE El = Hw. From this standpoint of common factors (units at least) on both sides of the equation one might further argue that that if it were possible to find and undertake sufficient activities common on both sides of the equation with - of course, adding in the concept of a fully reversible equation that the problem might be made to disappear as the spiral of bliss moves all parties into a state of ecstasy. There is evidence that this occurs in many partner based relationships know colloquially as Love. Given this we can conclude that draining the radiators is a function of the easy life and the happy wife only asked you to drain them because they want you to have an easy life - QED.

You need to get out more Mike :S

:D

 

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Actually I am going out to the pictures - Death of Stalin, the Hw in my equation thinks it would be good for us. Catch you later!

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6 hours ago, ProDave said:

Solution. Put the drain cock at the lowest point.

 

 

 

I may even have run it to outside, coming out under gravel.

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2 hours ago, MikeSharp01 said:

Discuss.... [...]

 

I try hard to offer what she wants, and vice versa, otherwise put:  consider your partner first. Mostly. :$

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I can't see why there's any logical reason to ever drain anything down below the height of the lowest fitting that needs to be accessed, with the sole exception of protection from freezing.

 

It's pretty rare to have a drain cock lower than the lowest point in an UFH system, for example, just because it's often impractical to fit one lower than the manifold.

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