jar546
Forum Coordinator
Do you agree with his opinion?
The opinion kicks in towards the end after the 10 minute mark.
The opinion kicks in towards the end after the 10 minute mark.
Thank for posting, that was coolI disagree with the willy-nilly installation of an expansion tank. I have corrections for the furnace.
Minute 1:35 is a blast.
So far for me, every single municipal water company in every jurisdiction, in every state I've worked in required a backflow preventer for the house so I am not sure where an expansion tank would not be required.
Expansion tanks are fairly inexpensive and easy to install at the time the water heater is installed. I see no reason not to install one with every water heater, even if there is currently no (known) backflow preventer or PRV. You never know when the utility company will decide to upgrade their meters and suddenly you have a check valve in your system.
That’s why we don’t do it.Makes absolute perfect sense.
As long as you KNOW there are no check valves (including check valves built into other devices) between the water heater and the well system's pressure tank, then no, you do not need an additional expansion tank.Does the water heater also need a separate expansion tank if you're on a well and have a pressure tank?
Is there a check valve to prevent backflow into the pressure tank?Does the water heater also need a separate expansion tank if you're on a well and have a pressure tank?
Is there a check valve to prevent backflow into the pressure tank?
Agree. But if there is not a check valve downstream of the pressure tank , then I'd use some judgement and exempt it.Every well that I have inspected had a checkvalve in the system to prevent backflow to the well.
Every well system must have a check valve upstream of the pressure tank, otherwise the pressure tank would discharge back into the well once the pump stopped. For a submersible pump system, the check valve is typically on the drop pipe just above the pump.Every well that I have inspected had a checkvalve in the system to prevent backflow to the well.
Water hammer arrestors should be installed on the piping as close as possible to the device that causes (or could potentially cause) a water hammer event. Typically, these are valves that close very rapidly like the solenoid valves in a washing machine or a toilet flush-o-meter valve.Do you need a water-hammer arrestor if there is a expansion tank?
Water hammer arrestors should be installed on the piping as close as possible to the device that causes (or could potentially cause) a water hammer event. Typically, these are valves that close very rapidly like the solenoid valves in a washing machine or a toilet flush-o-meter valve.
The expansion tank is too far away from any of these valves to absorb the shock wave (water hammer).
The hammer arrestors? NopeWouldn't this include a check valve?