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Hybrid Installation #122196
10/03/05 08:35 AM
10/03/05 08:35 AM
electure  Offline
Joined: Dec 2000
Posts: 4,279
Fullerton, CA USA
Well, not really, but it looks like the fittings were supplied by the plumber.

When are these required?

[Linked Image]

Tools for Electricians:
Re: Hybrid Installation #122197
10/03/05 10:30 AM
10/03/05 10:30 AM
Lostazhell  Offline
Joined: Feb 2004
Posts: 1,431
Bakersfield, CA (Originally Or...
Looks like someone's creation to buffer vibration from the conduit run or possibly for expansion/contraction....

Re: Hybrid Installation #122198
10/03/05 10:39 AM
10/03/05 10:39 AM
sandsnow  Offline
Joined: Sep 2004
Posts: 167
Irvine, CA, USA
I've seen the rubber ones used in bridges. Normally for seismic joints FMC or LTFMC is used.

Maybe using these is cheaper than LTFMC for machinery vibration.

Larry LeVoir
City of Irvine, CA
Re: Hybrid Installation #122199
10/04/05 12:45 PM
10/04/05 12:45 PM
ghost307  Offline
Joined: May 2005
Posts: 969
Chicago Illinois USA
Those are called "deflection couplings". They're used when the conduit on one side may end up misaligned with the other due to movement or vibration. You can find them in the Appleton catalog.

Re: Hybrid Installation #122200
10/05/05 12:31 PM
10/05/05 12:31 PM
Ryan_J  Offline
Joined: Aug 2003
Posts: 1,374
West Jordan, Utah, USA
How does the conduit stay bonded with these?

Ryan Jackson,
Salt Lake City
Re: Hybrid Installation #122201
10/05/05 06:15 PM
10/05/05 06:15 PM
Redsy  Offline
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Probably bonding is accomplished with a flexible braid or strap.

Re: Hybrid Installation #122202
10/05/05 07:50 PM
10/05/05 07:50 PM
Nick  Offline
Joined: Aug 2001
Posts: 599
Riverside, CA

Re: Hybrid Installation #122203
10/06/05 11:37 PM
10/06/05 11:37 PM
Tesla  Offline
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
They look like the technology developed by the USAF for ICBM and command bunkers for nuclear war.

In such systems, everything -- I mean everything -- is on flexi-mounts so as to work after a Richter 15 earthquake.

Specified normally in government contracts only.

Re: Hybrid Installation #122204
10/18/05 07:07 AM
10/18/05 07:07 AM
electure  Offline
Joined: Dec 2000
Posts: 4,279
Fullerton, CA USA
I'm not surprised that you recognize these! [Linked Image]

This is insisde the parking structure at Treasure Island, Las Vegas......One of your little projects.


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