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Did I buy the wrong tubing/compression fittings? - Page 2

post #11 of 20
Quote:
Originally Posted by velocd View Post
My last question is should I bother using pliers to tighten the fittings? I can get the tube all the way and thread the compression tight with pliers no problem. By hand.. no so though.
Personal preference, it doesn't really need to be all the way threaded on as long as the tubing is all the way on and you have several turns of the compression ring.
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post #12 of 20
Quote:
Originally Posted by velocd View Post
This is what I'm thinking too. The reason I'm confused is that everywhere I read people make it sound like 1/2" OD 3/4" ID just slips over the barb. I've only read about people needing to warm the tube or use lubricant with 7/16" ID.

So it was a surprise to me that 1/2" 3/4" didn't slip on, and I thought maybe I had bought the wrong size for the fitting or something.

My last question is should I bother using pliers to tighten the fittings? I can get the tube all the way and thread the compression tight with pliers no problem. By hand.. no so though.
Did you measure the inner diameter with a ruler or tape measure? It is possible the company sold you the wrong size. I would check that as I personally have never had trouble slipping 1/2" tubing over 1/2" compression fittings.
post #13 of 20
put the end of the tube in hot water it should losen it up abit to push in
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post #14 of 20
Thread Starter 
Quote:
Originally Posted by TheSchlaf View Post
Did you measure the inner diameter with a ruler or tape measure? It is possible the company sold you the wrong size. I would check that as I personally have never had trouble slipping 1/2" tubing over 1/2" compression fittings.
I measured the tubing earlier, it's the right size. For the fittings, I measured the lowest diameter of the barb at 1/2". The fittings plastic bags read 'for 1/2" 3/4" tubing' and I have 14 bags on me, so I hope they're the right size.
post #15 of 20
Don't worry about it man, just get the tube to the bottom and put on the fitting by hand. The last pic you have looks more than enough. As long as you get a few turns in on it. There is no way that tube is coming off. There has to be a whole lot of pressure for that to happen. If it helps you sleep, tighten the fitting then try pulling it off to test it. Don't think its coming off.
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post #16 of 20
Thread Starter 
Thanks for help all. I take back using pliers too, I really scrapped off the paint bad on this one fitting I've been testing.
post #17 of 20
Quote:
Originally Posted by velocd View Post
Thanks for help all. I take back using pliers too, I really scrapped off the paint bad on this one fitting I've been testing.
Be careful not to overtighten fittings to acrylic blocks either- hand tight + 1/4-1/2 turn is plenty.
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post #18 of 20
spit + heatgun/boiling water would do you good.
    
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post #19 of 20
Quote:
Originally Posted by velocd View Post
Thanks for help all. I take back using pliers too, I really scrapped off the paint bad on this one fitting I've been testing.
If you ever need to use your pliers on a fitting again, put a piece of material like a cloth or paper towel in between the fitting and the pliers to prevent them from scratching the fitting.
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post #20 of 20
Sorry, posted on wrong thread
Edited by 8564dan - 8/16/11 at 6:00am
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