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Old 11-12-2019, 05:23 AM   #19
twistedtree
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City: Vermont
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If you have a mixing valve at your hot water tank, then the downstream piping won't get so hot, assuming the mixing valve works correctly...I think there is a really good argument that any boat with engine heated water should have a mixing valve as a safety device.



Just looking at spec sheets, I would use the SeaTech series 35 or 45, but not the series 10 or 25, just given the temp rating.


Whale quick connect fittings are rated only to 150F, and these are the ones I have see (indirectly) fail.


SharkBite brass fittings look good with a 200F rating.


Sharkbite ProLock fittings are rated to 180F which is cutting it close.


So whatever system you plan to use, just take a few minutes to check the temp/pressure ratings.
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