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01-24-2022, 01:25 PM
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#1
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Guru
City: Long Beach, CA
Vessel Name: Aquarius
Vessel Model: Californian 55 CPMY
Join Date: May 2018
Posts: 725
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Hot water re-pipe with PEX a problem
I have experienced leaks in my 30 year old hot water pipes. After the last one I decided to replace the whole system. Wow, and insane job. Three times we were faced with seemingly impossible problems. Twice we got past them. I still don't have arms long enough to screw on the new fittings to my washing machine and I can't figure out how to get it out, but that I can save for later. After finally hooking up all of the 1/2" pex lines and brass shark bite fittings, several of the lines to the sinks are leaking. Some of these are almost impossible to reach with two hands or tools. We were thankful to get them connected and freaked out now that they leak. In a couple days we are going to try again. Does anyone have any tips on using these shark bite fittings and achieving leak free performance?
__________________
Aquarius 1991 Californian 55 CPMY Long Beach CA
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01-24-2022, 02:23 PM
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#2
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,149
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Feed extra pipe to where they need to be, then pull back and make that connection where it can be reached.
Attach flexible hoses from pex connections to the appliances if it makes it easier.
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01-24-2022, 02:40 PM
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#4
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TF Site Team
City: Seneca Lake NY
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 7,828
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With many of the PEX fittings a perfectly clean 90* cut is essential and a PEX cutting tool is the best way. I have used the crimp fittings (both rings and bands) when doing an extensive repair / replace and the SharkBite type for simple repairs. I have only had one crimp fitting leak when testing and that was one I assembled to dry fit and forgot to crimp it later.
__________________
Don
2008 MS 34 HT Trawler
"Bacchus"
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01-24-2022, 07:58 PM
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#5
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Senior Member
City: Wrightsville Beach, North Carolina
Vessel Name: Miss Dot Dee
Vessel Model: 1980 29' Prairie Trawler
Join Date: Jul 2010
Posts: 205
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I have re-plumbed many boats and rvs and made many repairs to pex I have used rings pinch clamps and shark grips. I have never had one leak as well and yes good cuts matter. the only thing I can think of is that when you pushed the pipe into the shark grip you didn't get it all the way in.
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01-25-2022, 11:45 AM
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#6
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Guru
City: Gibsons, B.C., Canada
Vessel Name: Island Pride
Vessel Model: Palmer 32'
Join Date: Oct 2007
Posts: 4,414
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Done at home but my last plumbing repair involved removing the entire tap/faucet set, attaching short hoses and then reinstalling the faucet set back into place. I could work the faucet set securing nuts but not the hose ftgs. in the very tight space. Having the faucet set on the counter made things far easier.
Then the final connection was done down where I could work the parts. Needed some extra bits and pieces and made a few extra trips to the hardware store but no leaks since.
And yes I have one of the tubing cutters. Going to put one on the boat also for the prices they are.
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01-25-2022, 03:31 PM
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#7
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Senior Member
City: San Francisco
Vessel Name: Couple’s Retreat
Vessel Model: 2019 North Pacific 45
Join Date: Aug 2014
Posts: 464
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I thought shark bite and PEX are different sizes.
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01-25-2022, 04:50 PM
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#8
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,191
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I replumbed a previous boat with SeaTek materials. The fittings are similar to Sharkbite. The only one that ever leaked was because I didn’t seat the pipe completely into the fitting. And yes the cut is very important.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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01-25-2022, 06:55 PM
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#9
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Guru
City: Groton, CT
Vessel Name: Datenight
Vessel Model: North Pacific 45
Join Date: Jan 2008
Posts: 1,106
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Quote:
Originally Posted by jimdavi
I thought shark bite and PEX are different sizes.
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North Pacific uses the Wirsbo expansion system. Sharkbite works with that tubing.
Rob
__________________
North Pacific 45
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01-25-2022, 11:19 PM
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#10
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Guru
City: Anacortes
Join Date: Mar 2016
Posts: 588
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A friend who runs the plumbing dept at the local Ace Hdwe told me that with Sharkbite you have to make sure your tube is cut square and that you need to chamfer the edges of the tube
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