×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

NSF-61 certified expansion joint or hose for tank nozzle

NSF-61 certified expansion joint or hose for tank nozzle

NSF-61 certified expansion joint or hose for tank nozzle

(OP)
Hello folks.

I have an AWWA potable water tank on a gravel pad. Design consolidated settlement is in excess of 1.5 inches. The piping is not particularly flexible, so I need an expansion joint between the tank and the closest pipe support. Can anyone suggest suppliers from whom I might source NSF-61 certified hose / joint for potable water (drinking water) service?

RE: NSF-61 certified expansion joint or hose for tank nozzle

What size piping is involved?

RE: NSF-61 certified expansion joint or hose for tank nozzle

(OP)
rconner,

What a bonehead move on my part for not mentioning that. I am sorry for that, because that is at the centre of my problem.

Sizes involved are 2" NPS, 3" NPS, 4" NPS, 6" NPS, 8" NPS and 10" NPS, all flanged 150# RF x 150# RF, proposed 304L SS.

The real issue is the combination of poor foundation design and even worse piping design, exacerbated by the fact that it is a glass-fused-to-steel tank with allowable nozzle loads of zero.

RE: NSF-61 certified expansion joint or hose for tank nozzle

Metrasphere is available in Hypalon which is an NSF product
but they may have testing on the standard product line as well

Hydrae

RE: NSF-61 certified expansion joint or hose for tank nozzle

(OP)
I could, of course, just read the FlexiCraft ad at the top of the screen.

RE: NSF-61 certified expansion joint or hose for tank nozzle

In applications such as this, the piping is not brought straight out from the tank. Instead, the piping is usually installed with an elbow to turn the piping sideways and then reverse back to another elbow. This piping arrangement adds some flexibility to the piping.

Installing the piping in this manner is probably a better solution than an expansion joint on a straight out piping arrangement.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources