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RE: Plumbing for an air supply system
You might be able to get away with not solvent cementing the slip joints
together. They do fit fairly tightly together. If this is a temporary
installation, I would give it a try.
However, I would be afraid in the long run, of developing a series of small
leaks in the piping system due to pressure and natural vibration. You then
spend money for electricity and not get all the air your pump is designed to
The silicon sealant might hold the PVC joints together by means of a
"gasket" effect, but it would not be a chemically welded joint such as
standard solvent cementing will give you. Again, pressure and vibration
might allow air loss from between several joints. The best joint is made by
first priming the mating surfaces with "purple primer" and then evenly
coating those same surfaces with PVC cement. Apply a quarter-turn to the
mating pieces as you push them together. This ensures an even coating of
cement inside the joint and the elimination of channeling [where air or
water could escape in small leaks under pressure].
> -----Original Message-----
> From: Gay [SMTP:ghemsath at att_net]
> Sent: Wednesday, June 20, 2001 2:52 PM
> To: KillieTalk at aka_org
> Subject: Plumbing for an air supply system
> I have a question
> When using PVC pipe for air distribution in the fish room, looped or not
> using slip connections is it necessary to glue / seal the joints /
> connections or if the slip connections are forced together enough ?
> If they need glues / sealed is using silicone OK ?
> -----Original Message-----
> From: Owner-KillieTalk at AKA_Org [mailto:Owner-KillieTalk at AKA_Org]
> Sent: Wednesday, June 20, 2001 11:09 AM
> To: Owner-KillieTalk at AKA_Org
> Subject: KillieTalk Digest V3 #1315
> Date: Wed, 20 Jun 2001 10:03:23 -0700
> From: "Stoecker,Michael,FRANKLIN
> PARK,NC&C"<michael.stoecker at us_nestle.com>
> Subject: RE: Plumbing for an air supply system
> Hi Jim,
> Tougher in the short run, but much better in the long run as your fish
> grows and more air is demanded from your supply system. The real reason
> that a loop is more self-balancing in terms of pressure distribution.
> the air can go one of two ways to get to any one outlet valve, and one or
> two legs of your system won't be starved for air. You can try to
> the same thing with control valves, but you might spend more time fiddling
> with the valves trying to balance your system than you do with your fish.
> You want to do the same thing for any water distribution systems as a fry
> flow through or central filtration system. You don't need an absolutely
> true loop system, although it would be ideal. At minimum, you need to
> your main runs connected together in a loop with short runs allowed off of
> Coincidentally, I just finished an air loop system for my tank stands in
> preparation for hooking up my LPH 100 linear piston pump I got from John.
> am now extending that loop to my daphnia, adult brine shrimp and water
> holding drum setup. I was real tempted to just run one line over
> there-about 35' of 1" PVC-because it would have been half the work, but
> thought better of the idea and will just make it a loop. BTW, working
> PVC is easy, but tricky. I find that in general, you need to
> think-out/construct one fitting ahead of where you are actually working in
> order to get the proper clearances/distances correct so that it mates back
> properly with the one you just finished.
> mike stoecker
> > -----Original Message-----
> > From: Jim Eller [SMTP:jeller3 at mail_com]
> > Sent: Wednesday, June 20, 2001 9:16 AM
> > To: killietalk at aka_org
> > Subject: Plumbing for an air supply system
> > Hello everyone,
> > This is not a direct killie related item.
> > I am installing pvc pipes to supply air to my fishroom (99% killies)
> > the linear compressor I got at the convention. John from Jehmco
> > using 1 in. pvc so that the air flow would not be restricted.
> > I have not confered with John about this but I wanted to ask for your
> > personal experiences or opinions first.
> > Should this system be installed as a tree or should it installed as a
> > loop? In other words should the branches for each tank shelf be a branch
> > off a single main supply line ("tree") or should the main supply line be
> > split into two supply lines with each side supplying the shelf from each
> > end and joined in the center("loop").
> > The "tree" system would be easier and cheaper but the "loop" would in my
> > opinion might be more efficient but more complicated, cost more and more
> > work to install.
> > I am planning to supply 75 tanks with enough air for a sponge or box
> > filter in each. Mostly 5 and 10 gallons and some smaller.
> > I hope this is clear. Your opinions would be appreciated.
> > TIA,
> > --
> > Jim Eller jeller3 at mail_com MI-USA
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