Since you have a PRV, yes.Ok, water heater drain confirmed at 105 p.s.i with cold and hot water dribbling. Can we say with relatively certainty that I have a failed PRV?
If you put a peak reading gauge on a home with a 50 gallon WH and recommended size tank, I expect the water pressure to peak out substantially over 80.System pressure can't get above 80. If you have an expansion tank that doesn't allow enough water in (during expansion), thus rising your pressure above 80, then it's too small. Despite the manufacturers sizing guides. I rarely go only by manufacturer guidelines without checking good practice recommendations. Manufacturers are in the business of manufacturing not keeping a system healthy.
Which is exactly my point, and the information shown using the calculators I linked to and you regularly disregard. Bumping up the size of the ET is cheap insurance and should keep the pressure within code limits all of the time, not just when someone uses water AFTER the pressure has risen during the heating process.If you put a peak reading gauge on a home with a 50 gallon WH and recommended size tank, I expect the water pressure to peak out substantially over 80.
https://terrylove.com/forums/index....g-regulator-question.94022/page-2#post-677156 is one of my refutations of the jadnashua claims. And I guess now you too.
The shop I worked at was in an odd spot in town and had over 90 psig. We were constantly fixing things. The limit of what an expansion tank can be stretched to isn't the issue. Flexing a water heater will cause early failure, flush valves get rattled into pieces, vaccum breakersdon't work worth a shit.If you put a peak reading gauge on a home with a 50 gallon WH and recommended size tank, I expect the water pressure to peak out substantially over 80.
https://terrylove.com/forums/index....g-regulator-question.94022/page-2#post-677156 is one of my refutations of the jadnashua claims. And I guess now you too.
The size of the air chamber is pretty much the size of the tank if the precharge has been ideally set.The problem isn't the size of the tanks it's the size of the air chamber.
And yet I try. The literature from thermal expansion tanks provide tables or calculators for sizing that identify tank sizing that cannot limit the expanded pressure to 80 psi. https://www.amtrol.com/wp-content/uploads/2019/06/9017-112-03_19-MC10007-Sizing-TXT.pdf table 2 on page 2 has 3 rows to help calculation where they allow to go to 100, 125, and 150. The Watts calculator sets 130 psi as a fixed max.Staying below what every other fixture is manufactured to hold and operate through its life, is a probably go to be tough to argue against.
This is awkward, but...
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