Manifolds are cheap, compared to multiple T's and such, and much less cumbersome.
Dozens to pick from at https://www.supplyhouse.com/PEX-Press-Plastic-Manifolds-18540000 You can kill a lot of time on this site. It is my Go-To for HVAC. Personally, I like the expansion type connectors myself. Absolutely simple, just have to buy an expansion tool. Either electric, (Milwaukee, expensive, or pliers type, then sell it on eBay when you are done!. https://www.supplyhouse.com/Wirsbo-Uponor-Q4690512-ProPEX-Ring-with-Stop-1-2 -blue-print-2298000-p https://www.supplyhouse.com/Wirsbo-Uponor-Q4760500-ProPEX-EP-Elbow-1-2-PEX-x -1-2-PEX-2316000-p https://www.youtube.com/watch?v=sJI_JdCH-dI https://www.supplyhouse.com/Iwiss-PPTLKIT-PEX-Expander-Tool-w-3-8-1-2-3-4-1- Heads-Includes-Tube-Cutter https://www.supplyhouse.com/Uponor-Wirsbo-Q2247550-3-4-EP-Branch-Multi-Port- Tee-w-1-2-Outlets-4-Outlets To Rob's question of the tubing cracking during freezing, the manufacturers don't guarantee that PEX won't split in a freeze, but they also say it is highly unlikely. In the directions for this expansion type connection, the MINIMUM temperature to use the expansion tool is something like 5 degrees. Pretty amazing stuff. I put almost 2 miles of Wirsbo PEX in my building as radiant floor heating in 1991, and they told me at the time it was guaranteed for 50 years. Still going strong. If you kink it, you can heat the kink with a heat gun until it is clear, then let it cool, back to original, almost. Bill Coleman C&C 39 Erie, PA From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of David via CnC-List Sent: Saturday, February 02, 2019 9:58 AM To: cnc-list@cnc-list.com Cc: David Subject: Re: Stus-List Replacing Water Lines... Speaking of manifolds. Looking at building vs buying. Thoughts? >From my Android.... _____ From: CnC-List <cnc-list-boun...@cnc-list.com> on behalf of Dave Godwin via CnC-List <cnc-list@cnc-list.com> Sent: Saturday, February 2, 2019 7:13:35 AM To: cnc-list@cnc-list.com Cc: Dave Godwin Subject: Re: Stus-List Replacing Water Lines... I replaced all of the original grey plastic pipe in our boat. With the exception of a section where someone (ahem, looks at self.) ran a screw through it, it was perfectly serviceable, However, since I am replacing the fixtures in the head and the galley and have adde a transom-mounted cockpit shower I replaced all of it. I used 1/2" SeaTech polyethylene tubing and associated fittings. The job was fairly easy to do and allowed for the building of a simple manifold on the pressure side of the system for the hot and cold outflows. The best thing that I did was purchase the pipe cutters to insure a clean, 90-degree cut on the ends. Pictures available upon request. Regards, Dave Godwin 1982 C&C 37 - Ronin Reedville - Chesapeake Bay Ronin <http://roninrebuild.blogspot.com/> 's Overdue Refit On Feb 2, 2019, at 1:57 AM, sender via CnC-List <cnc-list@cnc-list.com> wrote: The original grey, opaque plastic pipe that was commonplace in the late 70s & early 80s was polybutylene. My understanding is the issue with this material is in residential use it split open causing a flood, in situations where pressures AND temperatures are high (180F). It was taken off the market and companies were, and still are reluctant to make compatible fittings out of liability fears. Having said that, I've kept the poly-b in my boat as it unlikely to fail since my my water is only periodically under pressure, its only 40 psi, and it never gets really hot. if it was in my house, I'd remove it. Vinyl tubing tends to shrink, yellow and harden up over time. I'd do 1/4" or 3/8" pex if I was running new, but not sharkbites for fittings, there are lots of other compression fitting available at lower cost. Just my $0.02 Eric On Wed, Jan 30, 2019 at 7:07 AM David via CnC-List <cnc-list@cnc-list.com> wrote: I am sure this has been gone over before...so please indulge me. Replacing, re-designing, water lines in 1981 40-2. Pex is the obvious choice. Are there less obvious (and have cheaper tools required to install) choices? Has anyone improved on the original design? I am thinking of adding easier accessible manifolds and an additional line for antifreeze and blowing out water. Thanks in advance. David F. Risch, J. D. Gulf Stream Associates, LLC (401) 419-4650 _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
