dripping overflow from expansion tank

[tosca]

Please can someone help. i have warm air central heating and have a dripping overflow from expansion tank. Have replaced with new arm,ball washers so any idea what else it could be???

 

[ChrisR]

Do you have a seaprate little gas doobrie on the side of the WA unit for heating water? Or an electrically heated cylinder..?

 

[joe-90]

Is the water level adusted properly? Surface tension will keep the thing dripping if the level is set too high.


joe

 

[Softus]

Is the water level adusted properly? Surface tension will keep the thing dripping if the level is set too high.

Surface tension? Crazy man say what?

 

[joe-90]

Is the water level adusted properly? Surface tension will keep the thing dripping if the level is set too high.

Surface tension? Crazy man say what?

Do you know what surface tension is?

 

[Softus]

Do you know what surface tension is?

Of water? At 20°C it's 0.0726 N/m.

 

[joe-90]

Do you know what surface tension is?

Of water? At 20°C it's 0.0726 N/m.

There you go then, you knew it all the time. Well done.


joe

 

[Softus]

There you go then...

I know lots of things, the existence of most of which you're not even aware, but nothing within my sphere of experience or knowledge explains why you've associated surface tension with this topic, hence my assertion that you're crazy. You crazy bloke. Tch.

 

[joe-90]

There you go then...

I know lots of things, the existence of most of which you're not even aware, but nothing within my sphere of experience or knowledge explains why you've associated surface tension with this topic, hence my assertion that you're crazy. You crazy bloke. Tch.

Surface tension is a property of water. It always has been since the world was young. Now stop being a prat and try and help the guy out huh? Or is it that you are simply looking for trouble? (as per usual).


joe

 

[Nige F]

Is the water level adusted properly? Surface tension will keep the thing dripping if the level is set too high.

Surface tension? Crazy man say what?

Meniscus...or Mencap

 

[Softus]

ChrisR has the problem in hand, and nothing more can be offered until the OP replies. However, your offering is not only wrong, but bizarrely so, and I'm helping "the guy" by making that clear to him/her.

Regarding the alleged search for trouble, wherever your posts appear no looking is necessary.

BTW, surface tension is a property of all fluids, albeit to differing degrees, not just water.

 

[joe-90]

ChrisR has the problem in hand, and nothing more can be offered until the OP replies. However, your offering is not only wrong, but bizarrely so, and I'm helping "the guy" by making that clear to him/her.

Regarding the alleged search for trouble, wherever your posts appear no looking is necessary.

BTW, surface tension is a property of all fluids, albeit to differing degrees, not just water.

If the ballcock is set too high you will get hydraulic see-sawing which often fools the poster because it overflows for a while - and then stops, then overflows - and then stops.
If you knew anything about anything you would realise that. After all, as you say, all fluids have differing surface tension - so that MUST include water eh?


joe

 

[Softus]

If the ballcock is set too high you will get hydraulic see-sawing which often fools the poster because it overflows for a while - and then stops, then overflows - and then stops.

This is something I haven't heard of. Is the see-saw bright blue with horsey heads on?

If you knew anything about anything you would realise that.

Something of a fatuous remark, since you know perfectly well that I know some things about some things.

After all, as you say, all fluids have differing surface tension - so that MUST include water eh?

I quoted you a figure for the force of surface tension of water, in air, at 20°C, so it seems odd for you to suggest that I'm excluding water from the set of known fluids. Unless...can it be?! Is it that you actually know very little about the subject? Shirley not?!

 

[joe-90]

If the ballcock is set too high you will get hydraulic see-sawing which often fools the poster because it overflows for a while - and then stops, then overflows - and then stops.

This is something I haven't heard of. Is the see-saw bright blue with horsey heads on?

See-saw, flip-flop, stop-start, call it what you will.

BTW are you saying that having the water level set too high will not cause the tank to overflow?

Oh it would??

Well then, 'shadappa you face'.


joe

 

[Softus]

See-saw, flip-flop, stop-start, call it what you will.

Well then, I shall call it, um.... Malcolm

BTW are you saying that having the water level set too high will not cause the tank to overflow?

Oh it would??

Of course it would, but the cause of the overflow is the level of the water, not the surface tension forces at the surface of the water.