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Posted by Bob F on October 17, 2009, 8:14 pm
cheapdave@home.com wrote:
> I have hot water heating, and removed all the baseboard heaters to
> refinish living room floor. My house was built in 1951 and has old
> style baseboard heaters they have two 1/2 inch copper pipes that run
> through them and each section is 54 inch long and sweat soldered
> together...anyway about 36 ft altogether. I made a few cuts to get it
> apart and now have run into a problem trying to put back
> together...it seems that the 1/2 inch copper they used in 1951 (or at
> least what was used in my system) is about 1/16 inch bigger than the
> fittings - 1/2" elbows & couplers.....................what to do? I
> have tired using emery cloth to grind down old copper a little so the
> fitting will go over it, but it is not working, after much work can
> just get fitting on like 1/16 inch..... I can not afford to go out
> and buy all new heaters right now......I only have 2 90's and about 8
> couplers to sweat together........what to do???? any help
> appreciated.
IIRC, there may be fittings used for A/C systems or something that are slightly
different sizes than water pipe fittings. They might be what you need.
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Posted by Stormin Mormon on October 18, 2009, 9:59 am
HVAC tubing is typically smaller. For example, 3/4 water
copper is the same size as 7/8 HVAC tubing. But, it's
possible.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
IIRC, there may be fittings used for A/C systems or
something that are slightly
different sizes than water pipe fittings. They might be what
you need.
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Posted by RBM on October 18, 2009, 10:27 am
> HVAC tubing is typically smaller. For example, 3/4 water
> copper is the same size as 7/8 HVAC tubing. But, it's
> possible.
> --
> Christopher A. Young
> Learn more about Jesus
> www.lds.org
> .
> IIRC, there may be fittings used for A/C systems or
> something that are slightly
> different sizes than water pipe fittings. They might be what
> you need.
> You need to check your numbers
>
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Posted by The Daring Dufas on October 18, 2009, 5:24 pm
Stormin Mormon wrote:
> HVAC tubing is typically smaller. For example, 3/4 water
> copper is the same size as 7/8 HVAC tubing. But, it's
> possible.
>
HVAC tubing is measured by OD, plumbing is measured by ID.
That's why I have calipers in my pocket.
http://www.generaltools.com/Products/Stainless-Steel-Pocket-Caliper__132ME.aspx
TDD
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Posted by Tony Hwang on October 17, 2009, 8:20 pm
cheapdave@home.com wrote:
> I have hot water heating, and removed all the baseboard heaters to refinish
> living room floor. My house was built in 1951 and has old style baseboard
> heaters they have two 1/2 inch copper pipes that run through them and each
> section is 54 inch long and sweat soldered together...anyway about 36 ft
> altogether. I made a few cuts to get it apart and now have run into a
> problem trying to put back together...it seems that the 1/2 inch copper they
> used in 1951 (or at least what was used in my system) is about 1/16 inch
> bigger than the fittings - 1/2" elbows & couplers.....................what
> to do? I have tired using emery cloth to grind down old copper a little so
> the fitting will go over it, but it is not working, after much work can just
> get fitting on like 1/16 inch..... I can not afford to go out and buy all
> new heaters right now......I only have 2 90's and about 8 couplers to sweat
> together........what to do???? any help appreciated.
Hmmm,
Wonder you were looking at metric pipes?
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> refinish living room floor. My house was built in 1951 and has old
> style baseboard heaters they have two 1/2 inch copper pipes that run
> through them and each section is 54 inch long and sweat soldered
> together...anyway about 36 ft altogether. I made a few cuts to get it
> apart and now have run into a problem trying to put back
> together...it seems that the 1/2 inch copper they used in 1951 (or at
> least what was used in my system) is about 1/16 inch bigger than the
> fittings - 1/2" elbows & couplers.....................what to do? I
> have tired using emery cloth to grind down old copper a little so the
> fitting will go over it, but it is not working, after much work can
> just get fitting on like 1/16 inch..... I can not afford to go out
> and buy all new heaters right now......I only have 2 90's and about 8
> couplers to sweat together........what to do???? any help
> appreciated.