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Re: Intermittent high pressure in hot water heating system system

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Re: Intermittent high pressure in hot water heating system system Oscar_Lives 02-04-2007
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Posted by Oscar_Lives on February 4, 2007, 3:06 pm

> Chris
> standard expansion tank with bladder does not have valve under it
> tank normally hangs on the return line, it is not used to trap air
> as the tank without bladder it is use to take in expanded water
> and when boiler cools down and pressure drops the bladder
> push's water back into system as needed, that is why once system
> have been purged of air and system is operating normally the water
> make up (regulator) can be shout off and left off permanently
> in your own home, require check ones while advisable.
> Dido


What is "expanded water"?

Is that the same think as "heavy water"?






>> Closed valve under the expansion tank? That could explain
>> everything.
>> --
>> Christopher A. Young
>> You can't shout down a troll.
>> You have to starve them.
>> .
>>> Is there any possibility there's some sort of restriction
>> between the
>>> tank and the boiler water slowing the movement of water from
>> the
>>> system into the tank?
>



Posted by DIMwit on February 4, 2007, 3:42 pm
expanded metal is full of holes, making it much lighter. It is used to make
lath. Expanded water is used to take a bath. sounds very similar.

Expanded water, therefore is LIGHTER because of the holes, that's why it
forms a layer on top of the non-expanded water. Hah?!

Expansion is a very good thing, except when our wives expand to a size 20,
when you met her when she was a size 2.

My head is expanded from giddiness now. It is too big for my hat. Makes me
look like George Lopez.

Bob



>> Chris
>> standard expansion tank with bladder does not have valve under it
>> tank normally hangs on the return line, it is not used to trap air
>> as the tank without bladder it is use to take in expanded water
>> and when boiler cools down and pressure drops the bladder
>> push's water back into system as needed, that is why once system
>> have been purged of air and system is operating normally the water
>> make up (regulator) can be shout off and left off permanently
>> in your own home, require check ones while advisable.
>> Dido
> What is "expanded water"?
> Is that the same think as "heavy water"?
>>> Closed valve under the expansion tank? That could explain
>>> everything.
>>> --
>>> Christopher A. Young
>>> You can't shout down a troll.
>>> You have to starve them.
>>> .
>>>> Is there any possibility there's some sort of restriction
>>> between the
>>>> tank and the boiler water slowing the movement of water from
>>> the
>>>> system into the tank?
>



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