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pjdh59
compression fittings

what are your feelings on using compression fittings insted of soldering joints?

JLMCDANIEL
Re: compression fittings

Expensive and as with all mechanical joints problems with vibration and movement.
Jack

A. Spruce
Re: compression fittings

I don't care for them and avoid them whenever possible.

murphmgh
Re: compression fittings

in fact they will not pass code im MA.,aside from toilet/sink connections..........they really are bad news

djohns
Re: compression fittings

I have no idea about code issues but I have used compression fittings at work for years with no problems . I have used them on
hydraulic systems with over 2000 psi . Compressed gases with hundreds of pounds of pressure , etc . The entire industrial world relies on them . Quality connectors are very expensive , but " bad news " ? Not hardly .

A. Spruce
Re: compression fittings
djohns wrote:

I have used them on
hydraulic systems with over 2000 psi . Compressed gases with hundreds of pounds of pressure , etc . The entire industrial world relies on them . Quality connectors are very expensive , but " bad news " ? Not hardly .

Under thousands of pounds of pressure, sure, but just try replacing an angle stop and not have it leak! :eek: ;):D

Personally, I've never had issues with compression couplings such as those used to join two pieces of irrigation pipe together, but angles stops and those darnedable flex tube supply lines are darn near impossible. That's why I save myself and future repair people the hassles and just install threaded nipples at all water supply connections and braided hoses to connect to fixtures.

Now if Goldie would just open up his apprenticeship program, none of these problems would be an issue ... :p

goldhiller
Re: compression fittings

" what are your feelings on using compression fittings insted of soldering joints? "

I prefer sweated joints on copper pipe, but that isn't always appropriate or "best" in a given situation. Sometimes a compression fitting is the "better" way to go.

With the advent of pex tubing combined with copper stub-outs for the sinks, toilets, etc.... compression fittings are almost a necessity. Since you shouldn't try sweating within 18" of pex, a compression stop (valve) is in order. (One way out of this is to sweat a threaded adapter on the copper stub-out before you attach the pex. Then you could use a threaded stop.)

Trying to sweat a chromed stop to a copper stub isn't really advisable. IIRC, the solder melts at 480F and the chrome will discolor at 500F. Not a very big window.

goldhiller
Re: compression fittings

"Now if Goldie would just open up his apprenticeship program, none of these problems would be an issue ... "

Ha! Don't I wish. ;)

Remember.......90% of learning is a negative experience. I've had my share and have more most everyday. Argh.......

canuk
Re: compression fittings
goldhiller wrote:

"Now if Goldie would just open up his apprenticeship program, none of these problems would be an issue ... "

Ha! Don't I wish. ;)

Remember.......90% of learning is a negative experience. I've had my share and have more most everyday. Argh.......

ain't that the truth;)

murphmgh
Re: compression fittings

hey john,im not talking about an idustrial type fitting,,ie victaulic...etc im talking about a homeowner using a 1/2 or 3/4 copper compressing fitting...........lets be real,would you want that in a wall?

murphmgh
Re: compression fittings

sry my last post was to spruce

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