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ANDY WIERSMA
science forum beginner
Joined: 30 May 2005
Posts: 6
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 Posted: Mon Jul 04, 2005 8:33 pm Post subject:
Sewage Diffuser Deflection and Sway Problems?
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The system is an 8" stainless manifold on about a 350' diameter tank. It is
elevated about 20' with 24 diffuser assemblies hanging down about 18.5 feet
on a tee with 5 diffusers on the bottom. The new assembly uses 2x 3" unions
on a 2' extension attached on the bottom by a 15' long diffuser assenbly,
and on the top by a waffer style valve that uses a companion flange that
threads into the header.
My Problem is that the diffusers use coarse threads and each one has 7 areas
of coarse threads. There is alot of deflection and my fear is something will
vibrate loose into a 16' deep pool of poop. Any suggestions?
Coincidently there are only 14 X 4' poles welded onto the clarifier wall the
whole header manifold sways because
#1 There is only support of the weight nothing to prevent sway.
#2 The circular manifold has a gap at the end for the catwalk that connects
to the other tank.
Gotta Love Govt Engineers?! |
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N:dlzc D:aol T:com (dlzc)
science forum Guru
Joined: 25 Mar 2005
Posts: 2835
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| Posted: Tue Jul 05, 2005 12:24 am Post subject:
Re: Sewage Diffuser Deflection and Sway Problems?
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Dear Jonathan Barnes:
"Jonathan Barnes" <jbarnes6@btinternet.com> wrote in message
news:dacoq2$omg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...
| Quote: |
"ANDY WIERSMA" <wiersma@verizon.net> wrote in message
news:0Piye.3326$3Y3.1452@trnddc09...
The system is an 8" stainless manifold on about a 350'
diameter tank. It is elevated about 20' with 24 diffuser
assemblies hanging down about 18.5 feet on a tee with
5 diffusers on the bottom. The new assembly uses 2x 3"
unions on a 2' extension attached on the bottom by a
15' long diffuser assenbly, and on the top by a waffer
style valve that uses a companion flange that threads
into the header.
My Problem is that the diffusers use coarse threads
and each one has 7 areas of coarse threads. There is alot
of deflection and my fear is something will vibrate loose
into a 16' deep pool of poop. Any suggestions?
Get a sock of spares and a net with a 22" handel :-)
Apply " locktight " or similar to the threads.
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Loctite depends on oxygen to harden, maybe even to stay hard.
Better use non-hardening permatex.
"Diffusers" for what?
David A. Smith |
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Jonathan Barnes
science forum addict
Joined: 04 May 2005
Posts: 73
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| Posted: Tue Jul 05, 2005 1:46 am Post subject:
Re: Sewage Diffuser Deflection and Sway Problems?
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"ANDY WIERSMA" <wiersma@verizon.net> wrote in message
news:0Piye.3326$3Y3.1452@trnddc09...
| Quote: | The system is an 8" stainless manifold on about a 350' diameter tank. It
is
elevated about 20' with 24 diffuser assemblies hanging down about 18.5
feet
on a tee with 5 diffusers on the bottom. The new assembly uses 2x 3"
unions
on a 2' extension attached on the bottom by a 15' long diffuser assenbly,
and on the top by a waffer style valve that uses a companion flange that
threads into the header.
My Problem is that the diffusers use coarse threads and each one has 7
areas
of coarse threads. There is alot of deflection and my fear is something
will
vibrate loose into a 16' deep pool of poop. Any suggestions?
|
Get a sock of spares and a net with a 22" handel :-)
Apply " locktight " or similar to the threads.
| Quote: |
Coincidently there are only 14 X 4' poles welded onto the clarifier wall
the
whole header manifold sways because
#1 There is only support of the weight nothing to prevent sway.
#2 The circular manifold has a gap at the end for the catwalk that
connects
to the other tank.
Gotta Love Govt Engineers?!
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Brian Whatcott
science forum Guru Wannabe
Joined: 09 May 2005
Posts: 267
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| Posted: Tue Jul 05, 2005 10:13 am Post subject:
Re: Sewage Diffuser Deflection and Sway Problems?
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On Mon, 4 Jul 2005 19:24:00 -0700, "N:dlzc D:aol T:com \(dlzc\)" <N:
dlzc1 D:cox T:net@nospam.com> wrote:
| Quote: | Dear Jonathan Barnes:
"Jonathan Barnes" <jbarnes6@btinternet.com> wrote in message
news:dacoq2$omg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...
"ANDY WIERSMA" <wiersma@verizon.net> wrote in message
news:0Piye.3326$3Y3.1452@trnddc09...
The system is an 8" stainless manifold on about a 350'
diameter tank. It is elevated about 20' with 24 diffuser
assemblies hanging down about 18.5 feet on a tee with
5 diffusers on the bottom. The new assembly uses 2x 3"
unions on a 2' extension attached on the bottom by a
15' long diffuser assenbly, and on the top by a waffer
style valve that uses a companion flange that threads
into the header.
My Problem is that the diffusers use coarse threads
and each one has 7 areas of coarse threads. There is alot
of deflection and my fear is something will vibrate loose
into a 16' deep pool of poop. Any suggestions?
Get a sock of spares and a net with a 22" handel :-)
Apply " locktight " or similar to the threads.
Loctite depends on oxygen to harden, maybe even to stay hard.
Better use non-hardening permatex.
"Diffusers" for what?
David A. Smith
|
Loctite depends on anaerobic conditions to set?
Brian Whatcott |
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arem_29
science forum beginner
Joined: 27 Jun 2005
Posts: 10
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| Posted: Tue Jul 05, 2005 10:30 am Post subject:
Re: Sewage Diffuser Deflection and Sway Problems?
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try clickin this one, i think this might help you out!..
http://www.tpub.com/
i just hope it helps!...
ANDY WIERSMA wrote:
| Quote: | The system is an 8" stainless manifold on about a 350' diameter tank. It is
elevated about 20' with 24 diffuser assemblies hanging down about 18.5 feet
on a tee with 5 diffusers on the bottom. The new assembly uses 2x 3" unions
on a 2' extension attached on the bottom by a 15' long diffuser assenbly,
and on the top by a waffer style valve that uses a companion flange that
threads into the header.
My Problem is that the diffusers use coarse threads and each one has 7 areas
of coarse threads. There is alot of deflection and my fear is something will
vibrate loose into a 16' deep pool of poop. Any suggestions?
Coincidently there are only 14 X 4' poles welded onto the clarifier wall the
whole header manifold sways because
#1 There is only support of the weight nothing to prevent sway.
#2 The circular manifold has a gap at the end for the catwalk that connects
to the other tank.
Gotta Love Govt Engineers?! |
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N:dlzc D:aol T:com (dlzc)
science forum Guru
Joined: 25 Mar 2005
Posts: 2835
|
| Posted: Tue Jul 05, 2005 11:10 am Post subject:
Re: Sewage Diffuser Deflection and Sway Problems?
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|
Dear Brian Whatcott:
"Brian Whatcott" <betwys1@sbcglobal.net> wrote in message
news:p8ukc1h7j6qfbt9hudhk1qi5f22q50ng28@4ax.com...
| Quote: | On Mon, 4 Jul 2005 19:24:00 -0700, "N:dlzc D:aol T:com
\(dlzc\)" <N:
dlzc1 D:cox T:net@nospam.com> wrote:
Dear Jonathan Barnes:
"Jonathan Barnes" <jbarnes6@btinternet.com> wrote in message
news:dacoq2$omg$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...
"ANDY WIERSMA" <wiersma@verizon.net> wrote in message
news:0Piye.3326$3Y3.1452@trnddc09...
The system is an 8" stainless manifold on about a 350'
diameter tank. It is elevated about 20' with 24 diffuser
assemblies hanging down about 18.5 feet on a tee with
5 diffusers on the bottom. The new assembly uses 2x 3"
unions on a 2' extension attached on the bottom by a
15' long diffuser assenbly, and on the top by a waffer
style valve that uses a companion flange that threads
into the header.
My Problem is that the diffusers use coarse threads
and each one has 7 areas of coarse threads. There is alot
of deflection and my fear is something will vibrate loose
into a 16' deep pool of poop. Any suggestions?
Get a sock of spares and a net with a 22" handel :-)
Apply " locktight " or similar to the threads.
Loctite depends on oxygen to harden, maybe even to stay hard.
Better use non-hardening permatex.
"Diffusers" for what?
Loctite depends on anaerobic conditions to set?
|
Oops. Oxygen prevents loctite from curing, not as I
believed/indicated. If the diffusers are bringing in air,
loctite may not be the solution.
URL:http://www.loctite.com/int_henkel/loctite_us/index.cfm?&pageid=214&layout=2
<QUOTE>
Anaerobic adhesives do not contain solvents, which must dry. For
an anaerobic adhesive to cure, it must be in contact with active
metal ions and contact with oxygen eliminated.
<END QUOTE>
Silicone sealant might be good on the threads. It used it pretty
extensively as thread dope on small ozone contacting systems.
David A. Smith |
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