Air tank

A

alan bredbury

New member
Aug 5, 1999
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We seem to be doing tanks on the list at the moment
so. At some time in the past while I was strictly a
lurker I found a link either from a site or this list
that had Stainless steel replacement air tanks for the
GMC. They were quite reasonably priced. Has anyone
seen it or remember it? I need a new one, mine old
steel one has a rust pin hole in the bottom which will
only get worse with time. Thanks.
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>We seem to be doing tanks on the list at the moment
>so. At some time in the past while I was strictly a
>lurker I found a link either from a site or this list
>that had Stainless steel replacement air tanks for the
>GMC. They were quite reasonably priced. Has anyone
>seen it or remember it? I need a new one, mine old
>steel one has a rust pin hole in the bottom which will
>only get worse with time. Thanks.

Check with:
Ray Rhodes
9837 Chiswell Road
Dallas, Texas 75238
214-348-0616
or
Jim DaMaere
1st design - $89
2nd design - $59
403-329-3091

bdub
 
Emery,

Funny you should mention this, because I was thinking of doing exactly
that. A few years back I moved my air tank out from under the battery
tray and onto the top of the bumper support. Never had a problem with
overheating, but didn't like it sitting in front of the radiator. I
considered putting one of Jim's SS tanks back under the batteries, but
then thought about a piece of 4" PVC mounted behind the bumper support.

I'll post some pic's if I do it(and it works).

Patrick

>
> Some have also reported that they used schedule 40 PVC pipe with end caps
> welded on with PVC solvent and that they would hold well over the 120 pound
> cut off pressure. You can drill and thread the caps for the brass fittings.
- --
Patrick Flowers
Mailto:patrick

The GMC Motorhome Page
http://www.gmcmotorhome.com
 
I had similar thoughts a few months back and contacted a PVC pipe manufacturer
attempting to find out what pressure their pipe would contain. They of course
cautioned that some who used PVC pipe for a tank often times experienced
explosions, with some disastrous results, said the fragments caused damage, and
they would not give me info on the pressure their pipe would withstand, obviously
for liability reasons.

Does anyone know of any credible data available on this subject??

Paul Bartz

From: owner-gmcmotorhome
[mailto:owner-gmcmotorhome]On Behalf Of Patrick Flowers
Sent: Wednesday, February 09, 2000 9:59 PM

Emery,

Funny you should mention this, because I was thinking of doing exactly
that. A few years back I moved my air tank out from under the battery
tray and onto the top of the bumper support. Never had a problem with
overheating, but didn't like it sitting in front of the radiator. I
considered putting one of Jim's SS tanks back under the batteries, but
then thought about a piece of 4" PVC mounted behind the bumper support.

I'll post some pic's if I do it(and it works).

Patrick

>
> Some have also reported that they used schedule 40 PVC pipe with end caps
> welded on with PVC solvent and that they would hold well over the 120 pound
> cut off pressure. You can drill and thread the caps for the brass fittings.
- --
Patrick Flowers
Mailto:patrick

The GMC Motorhome Page
http://www.gmcmotorhome.com
 
Jim DeMaere
3204 Lakeridge Boulevard.
Lethbridge, Alberta Canada T1K3J1
403 329 3091

Makes/sells the finest tanks I have seen. All stainless. for both air and
hot water. I changed my large 73 - 74 tank to one of his small tanks for
75 - 77s and it is great.

byron maxwell / chaparral
 
I have both, front air tank and hot water tank from Jim. Great. If ordering,
also order his (single) air-bag protectors, and put them on before you install
Byron's air-bag shut off valves.

Wayne Newland F9300 75 Palm Beach Columbia, (Just back from 9 days to
Houston and 711 messages) Md.

>
> Jim DeMaere
> 3204 Lakeridge Boulevard.
> Lethbridge, Alberta Canada T1K3J1
> 403 329 3091
>
> Makes/sells the finest tanks I have seen. All stainless. for both air and
> hot water. I changed my large 73 - 74 tank to one of his small tanks for
> 75 - 77s and it is great.
>
> byron maxwell / chaparral
 
Well, maybe I'll show my ignorance here, but the pressure rating is printed
right on the pipe. Obviously, most manufacturers intend Sch. 40 PVC pipe to
be used in domestic water service, but pressure is pressure. Water pressure
is less hazardous because water is incompressible and failure will cause
less damage(this is why pressure vessels are "hydrostatically" tested for
certification).

A friend of mine owns a garage and when he built a new building 20 years
ago, the entire compressed air system was installed with Sch. 60 PVC. Been
there 20 years without a problem.

Patrick

>
> I had similar thoughts a few months back and contacted a PVC
> pipe manufacturer attempting to find out what pressure their
> pipe would contain. They of course cautioned that some who
> used PVC pipe for a tank often times experienced explosions,
> with some disastrous results, said the fragments caused
> damage, and they would not give me info on the pressure
> their pipe would withstand, obviously for liability reasons.
>
> Does anyone know of any credible data available on this subject??
>
> Paul Bartz
 
I was just going through some "digests" from a couple weeks ago (sometimes
it's hard to keep up), when I noticed some posts about using 4" PVC tubing
with end caps as an air tank. Well, we just had the air system upgraded on
our '76 Royale rear bath (compessor etc. under street side twin bed) and
included such a tank.

We had the oem Dana compressor replaced with a Thomas 317 and added a
cooling loop, drier, pressure guage, auxilliary tank (4" x 4' PVC pipe) and
an external air coupler inside he left rear wheel well. Since the tank is
in series between the check valve and the drier, and the coupler is tee'd
of the line between the drier and the manifold, we'll now have an air
supply when ever we need it by closing off the ball valves at the air bags.

We haven't had occasion to road test it yey, but if anyone wants more
detail, just let me know.

Dave (& Dege), '76 Royale, Santa Barbara, CA
 
Andy, there are two fittings glued int tapped holes in the PVC pipe.

HTH,

Dave (& Dege), '76 Royale, Santa Barbara, CA
 
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