black dog
Free America
The knowledge of weekend warriors has no bounds.Not to Clem.
Hot water heater expansion tank psi?
- Thread starter softtouch
- Start date
Clem72
Well-Known Member
You literally posted the same thing I did you retard. We were making the same point. I'm glad you were a good plumber, I assume it doesn't require very advanced math or reading skills given what I have seen of your vast intelligence.
What happened to your last avatar?
Made you look smort.
I closed the house main water valve and drained down the system. The tank air was 9 psi.
Pumped it up with a manual pump on a step ladder to 44.5 psi. Not strong enough at age 91 to go any higher.
Laundry tub spigot at 50 psi, tank air is 48.5 psi.
With outdoor hose spigot open, laundry tub spigot is at 32 psi, the tank air is 42.5 psi.
I think I will drain the system again in six months to see if the tank holds its pressure.
Pumped it up with a manual pump on a step ladder to 44.5 psi. Not strong enough at age 91 to go any higher.
Laundry tub spigot at 50 psi, tank air is 48.5 psi.
With outdoor hose spigot open, laundry tub spigot is at 32 psi, the tank air is 42.5 psi.
I think I will drain the system again in six months to see if the tank holds its pressure.
black dog
Free America
If the tank bladder is bad it will be full of water when you attach your hand pump or pressure gauge to the schreder valve, and you wouldnt have any pressure in it with the house drained own.
Kinnakeet
Well-Known Member
Why
black dog
Free America
I believe bladder-diaphragm tanks have been around since the 1920's. I'm going to guess they were put in use in the 1970's with city water and the advancement with modern water meters that come with check valves and or pressure regulation. Before that when one heats water and it expands it could simply be pushed back through the water lines to the street, neighbors home and so on.
Now in most counties a one way device such as a single/dual check valve or depending on equipment a Back-flow device is installed in your city water service and your water cant reverse when it expands when heated. A bladder tank will also help with homes that have a water hammer.
Thus a small bladder tank is a safety feature in your water system.
Does that help?
Kinnakeet
Well-Known Member
My home was built in 2000 no expansion tank on water heater but one where the line from my well comes thru the basement wall
black dog
Free America
A well is not city water, a well has a bladder tank that's sized according to the pumps horse power.
Kinnakeet
Well-Known Member
Got it I was wondering about that