Return to the Plumbing Forum | Post a Follow-Up

Well Pressure Tank......need a backflow preventer?

Posted by dave_mn (My Page) on
Thu, Jan 31, 13 at 17:12

Installing a new pressure tank in my dads house. The instructions include adding a back flow preventer (one way valve). However my current system in my home doesnt have one. Neither does my brothers house. All similar systems. Is this valve neccessary?

Follow-Up Postings:

RE: Well Pressure Tank......need a backflow preventer?

It stops the water from draining back to the well, I guess. I'd think it was a good idea, but I don't have that much experience with wells, which I assume you're on.

RE: Well Pressure Tank......need a backflow preventer?

If the system worked until the tank failed, the requisite check valve or foot valve is already in place. Jet pumps will not work without the foot valve and submersible pumps have a check valve built-in.

RE: Well Pressure Tank......need a backflow preventer?

My check valve at pump failed so pressure tank would push water back down well. I put a 2nd valve at tank inlet and solved problem.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Plumbing Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here