OT hot water heating plumbing question.

INCase · Aug 7, 2009

Have a boiler with baseboard heat. Also have a pellet stove in room addition. Pellets $ are thru the roof. Was thinking of adding a baseboard to the new room to tie into the existing system. With the slab construction, the only place to tie in is under the kitchen cabinet so I don't really want to use a torch under there.

Question: can I use compression fittings on a hot water heating system plumbing? (not steam)
Thanks!

rhouston · Aug 7, 2009

I can't say yes or no. Compression fittings can be used on a water supply that can have a rated pressure of 100 PSI (city water top pressure) Your boiler is runnig somwhere around 15-30 PSI there should be a pressure limiter on the water supply where it connects to your boiler which should say what it's set at. There should also be a pressure guage on the boiler showing the current pressure. Unless someone can give a good reason or some Code that says you can't I would not hessitate to use a compression fitting on a hotwater baseboard system.

Kruse · Aug 7, 2009

Have you looked into Pex? (Google it)

Anonymous-0 · Aug 7, 2009

(quoted from post at 12:49:26 08/07/09) Have you looked into Pex? (Google it)

Good stuff!!! Still have to connect to the copper, but I think there are fittings for that also..

Dave

bob featherstone · Aug 7, 2009

re-did my whole house last year & used plastic
( CPCV ) for both hot & cold very easy to work with just cut & glue & a lot cheaper than copper has to be cpvc not pvc for potable water
bob

Gun guru · Aug 7, 2009

I have used compression fittings on hydraulic oil systems and water systems for years. And the hydraulic oil systems have seen 275F temps, that is with SS tubing and fittings. (Parker A-lok style)

Anonymous-0 · Aug 7, 2009

check in the post concerning soldering copper (I think it was in the tool talk section)... someone mentioned connectors that I think are called "Shark Bite". I have bought them at Ace Hardware and at the Depot... used them on 3 different jobs. Was very skeptical at first, but they work GREAT and if you buy the little "wrench", you can even pull them apart for re-use. These connectors will join copper to copper, pex to pex, or pex to copper and are either straight or elbow. If you don't want to solder, I highly recommend these!!! ...d

Anonymous-0 · Aug 7, 2009

IF I where you,,, I SURE would not use compression,,, what I would do is use copper, put it together and then, install it with a union fitting, that will keep the torch away from the wood,,

I have seen compression come apart in due time, and it's a mess, so it's your choice, but for me, I go for the Best,,, not the least Best either,

oliver power · Aug 7, 2009

I believe you want to use PEX-ALUMINUM-PEX for hot water heat. Not just plain pex. It's been a while since I read up on it. But, I believe that's right.

Old Roy · Aug 7, 2009

Yep shark bite seen several installations done and no leaks. comes in various made components.
Untitled URL Link

pgo12 · Aug 8, 2009

compression is fine, dont use shark bites on hot water heat. pg

Gary from Muleshoe · Aug 8, 2009

Use Shark-Bite fittings. I have used them on hot water lines and cold with no problems. Can't see why it would not work in this situation as well.

OT hot water heating plumbing question.

INCase

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rhouston

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Kruse

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Anonymous-0

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bob featherstone

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Gun guru

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Anonymous-0

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Anonymous-0

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oliver power

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Old Roy

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pgo12

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Gary from Muleshoe

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