Comparing Pressure Fluctuations Before and After Installing Thermal Expansion Tank to Water Heater

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This video demonstrates the effectiveness of thermal expansion tank in stabilizing water pressure in the home plumbing system by measuring and comparing the water pressure fluctuations before and after installing the thermal expansion tank to the water heater.
The main items used for installing this thermal expansion tank are listed below:
2 gal. Thermal Expansion Tank
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3/4 in. x Close MIP Brass Hex Nipple Fitting
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3/4 in. FIP 90-Degree Brass Elbow Fitting
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3/4 in. FIP x 3/4 in. FIP x 24 in. Stainless Steel Water Heater Supply Line
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3/4 in. Brass FIP x FIP Full Port Threaded Ball Valve
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3/4 in. x 4 in. MIP Brass Nipple Fitting
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3/4 in. FIP Brass Tee Fitting
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3/4 in. x Close MIP Brass Hex Nipple Fitting
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Pro Dope 8 oz. Pipe Joint Compound
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1/2 in. x 260 in. Thread Sealing PTFE Plumber's Tape
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HoldRite QuickStrap Universal Expansion Tank Water Heater Wall Mounting Bracket, Stainless Steel, QS-U
www.amazon.com...

Опубликовано:

28 сен 2024

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Комментарии : 21

@RVail623 8 месяцев назад

Good video. However, two improvements: 1. Replace the rotary cold water shutoff valve with another ball valve. 2. Invert the expansion tank so that the water intake is located at the bottom. Which, in theory, would tend to maximize the durability of the rubber gasket inside the expansion tank.

@pilot0208 8 месяцев назад

Question, do i need to replace the rotary valve with a ball valve to pass inspection? does expansion tank needs to be secure to wall or can it be without it as long as is connected directly to the pipe, thank you

@RVail623 8 месяцев назад

@@pilot0208 Not required to replace the rotary valve, but a simply good idea to, since they often get gummed up & fail to work properly. The tank will likely need some kind of added support, in case it gets water-logged and the extra weight could make the pipes fail.

@ericjane747 8 месяцев назад

Also having the air valve accessible on the top lets it be checked for pressure and bladder rupture.

@happydiytime 8 месяцев назад

Thanks for your helpful suggestions!

@pilot0208 8 месяцев назад

@@RVail623 thanks for the info. I am trying to do this on my own. I understand that you are supposed to match the water pressure your water valve regulator outside the house is set to , to the expansion tank, I replaced mine but did not really tested it before I replaced it so I don’t really know what was the pressure it was set to before, so the question is what is it supposed to be set to? Does it goes based on how big the house is? How the city says is supposed to be set to? Reason I ask is because I have seen some videos and their houses were set differently, some were 80psi and some 50. Any help on this is greatly appreciated

@jeffreyplumber1975 22 дня назад

something you didnt concider is. the red needle can and will bounce if a valve is opened rapidly or sometimes even the sprinkler system . installing a thermal xpansion tank can act like a water hammer arrestor . So I question the true accuracy but not the concept and agree that is the purpose of the expans ion tank .

@happydiytime 21 день назад

Thanks for pointing this out.

@stevem1081 8 месяцев назад

Taking a bath or a very long shower could increase that peak pressure, unless you have a small leak or use some water shortly after using the shower. Also, people on a well do not need an expansion tank, as the tank acts as one.

@happydiytime 8 месяцев назад

Thanks for sharing your experience.