check valve

[inspector1]

Is a check valve needed on a residential home with a well that has a top fed water heater? Thanks

 

[SCBO1]

IMO the well would be classified as an alternate water source an our state requires backflow protection.

pc1

 

[Mule]

What and who are you trying to protect?

 

[RJJ]

Mule: Some people feel that by not protecting the water source there can be contamination of the aqua fir.

 

[Frank]

Would not the foot valve in the well perform that function?

 

[RJJ]

Yes if it has a jet pump!

 

[north star]

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inspector1,

Welcome to The Building Codes Forum!

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[inspector1]

Thank you.

 

[GHRoberts]

Yes if it has a jet pump!

Submersible well pumps seem to have a check valve at the bottom.

 

[Mule]

How rude of me!

Welcome inspector1. For some reason I thought you were an old timer. Sorry.........

 

[RJJ]

Well George what or who's pump? A foot value is a different animal.

Most are set up with a check valve but not all. Depend on the pressure vessel and the pump configuration. A continuous pressure pump would not need a check valve.

 

[jar546]

A check valve for the pressure tank does not meet the standard for backflow prevention and its purpose is so that the pressure tank works.

 

[GHRoberts]

Well George what or who's pump? A foot value is a different animal.Most are set up with a check valve but not all. Depend on the pressure vessel and the pump configuration. A continuous pressure pump would not need a check valve.

All the submersible well pumps I have found on the internet seem to have check valves (or check valve systems???) that prevent backflow. According to Wiki one needs a dual check valve for code compliance. I don't know if a single check valve is sufficient or if a check valve system is a dual check valve.