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Old 02-11-2016, 04:10 PM   #11
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If you want brass fittings without the metal clamps, Home Depot carries "shark bite" fittings that work with PEX tubing. Push the tubing into the fitting and it locks in place. I had to replace a bypass valve in the fall for the water heater. Worked great!

Shark bite fitting $2.29
Plastic replacement valve $.89

I'll stick to the shark bite valve for piece of mind.
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Old 02-11-2016, 04:26 PM   #12
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I realize the plastic fittings are made by Nibco, but that is still the weak point regardless. The 90's will crack or break long before the tubing. The tubing I know will expand quite a bit.
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Old 02-11-2016, 07:58 PM   #13
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When installing the winterizing kit, due to tight corner I have to connect using hose that has metal screw head (from home depot) into the black plastic intake of the pump.
See the picture attached.
Would it be a problem to thread in a metal screw head to a pump thread that is made of plastic.
Would it cause problem during freezing temperature since metal and plastic expand and contract at different rate ?
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Old 02-11-2016, 08:01 PM   #14
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Old 02-11-2016, 08:13 PM   #15
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Won't be any issues. Many of the kitchen faucets are metalic connected to the plastic pipe.
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Old 02-11-2016, 08:51 PM   #16
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Quote:
Originally Posted by Camping Couple View Post
If you want brass fittings without the metal clamps, Home Depot carries "shark bite" fittings that work with PEX tubing. Push the tubing into the fitting and it locks in place. I had to replace a bypass valve in the fall for the water heater. Worked great!

Shark bite fitting $2.29
Plastic replacement valve $.89

I'll stick to the shark bite valve for piece of mind.
Sharkbites work well provided you are careful to get the tubing fully seated in the fitting. A lot of folks stop at the first "click" and end up blowing the tubing out of the fitting. Additionally, some Sharkbites can get pretty costly. Sharkbite is a brand name and there are many others that work on the same principle. They do have a neoprene "O" ring seal on the inside that can be damaged during installation. I don't know if the "O" rings can deteriorate over time.

I don't think anything beats a good crimp ring on a metal fitting if you have the proper tools.
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