Positive displacement pumps don't care. A gallon goes in and pushes it a fixed
distance. Non compressible water is magic.
We have done 3000' so far.
https://www.youtube.com/watch?v=bt4aEn8cliQ&ab_channel=GMPlastA%2FS
One site says:
Advantages of blowing compared to pulling:
a.. Longer installation distances can be reached
b.. Installation distance less dependent on bends and undulations in duct
c.. Forces exerted on the cable are lower
d.. Easier use blowing in tandem operation
e.. The step of installing a winch rope is avoided
f.. Equipment is needed only at one end of the duct route
And you can use your same blowing machine, just don’t need compressors.
Compressors are a pain, you need 400 CFM, they get hot, they break down and
they can get the air hot enough to make the duct soft in the summertime.
-----Original Message-----
From: Chris Fabien
Sent: Tuesday, November 9, 2021 6:48 AM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] corrugated conduit
Chuck, Interesting idea. Does this scale up to long distances like
blowing does? Water seems like it would have a lot more resistance in
a mile of 1.25" pipe but perhaps with 200psi behind it that's no
issue?
On Mon, Nov 8, 2021 at 3:46 PM Chuck McCown via AF <af@af.afmug.com> wrote:
>
> Right, they are always full of water.
> I made a proofing dart with a cup seal at the end.
> 20 GPM 200 PSI moves it along at about 5 feet per second. The pump was
> remarkably cheap to build.
>
> The cable or mule tape is buoyant so that reduces friction and the water does
> too. I have read about this for years but never tried it.
>
> From: TJ Trout
> Sent: Monday, November 8, 2021 1:37 PM
> To: AnimalFarm Microwave Users Group
> Subject: Re: [AFMUG] corrugated conduit
>
> Underground condit gets filled with water from condensation anyway, so I'm
> sure he doesn't clean it out. I'm assuming he's using a dart and pushing it
> with water to pull cable in?
>
> On Mon, Nov 8, 2021 at 12:34 PM Bill Prince <part15...@gmail.com> wrote:
>>
>> I don't understand how that works (with water). Seems like it would be a
>> pain to get it out? or do you just leave it in there?
>>
>>
>> bp
>> <part15sbs{at}gmail{dot}com>
>>
>> On 11/8/2021 11:59 AM, Chuck McCown via AF wrote:
>> > Cheap is a selling point for me. We have started to put stuff down
>> > conduit with water rather than air. So far it is much better than air.
>> >
>> > -----Original Message----- From: Chris Fabien
>> > Sent: Monday, November 8, 2021 10:33 AM
>> > To: AnimalFarm Microwave Users Group
>> > Subject: Re: [AFMUG] corrugated conduit
>> >
>> > I would just use normal duct of whatever size is appropriate . That
>> > just doesn't look as sturdy as solid wall of plastic. Looks like being
>> > more flexible is the key selling point.
>> >
>> > On Thu, Nov 4, 2021 at 7:02 PM Chuck McCown via AF <af@af.afmug.com>
>> > wrote:
>> >>
>> >> No, not smurf tube. It is corrugated micro duct.
>> >>
>> >> Sent from my iPhone
>> >>
>> >> On Nov 4, 2021, at 4:02 PM, Josh Luthman
>> >> <j...@imaginenetworksllc.com> wrote:
>> >>
>> >>
>> >> The cheap stuff from Home Depot? That sounds like a nightmare.
>> >>
>> >> Josh Luthman
>> >> 24/7 Help Desk: 937-552-2340
>> >> Direct: 937-552-2343
>> >> 1100 Wayne St
>> >> Suite 1337
>> >> Troy, OH 45373
>> >>
>> >>
>> >> On Thu, Nov 4, 2021 at 4:08 PM Chuck McCown via AF <af@af.afmug.com>
>> >> wrote:
>> >>>
>> >>> There is HDPE versions that are designed for direct burial.
>> >>>
>> >>> From: Bill Prince
>> >>> Sent: Thursday, November 4, 2021 2:04 PM
>> >>> To: af@af.afmug.com
>> >>> Subject: Re: [AFMUG] corrugated conduit
>> >>>
>> >>>
>> >>> That orange stuff? I would not think it is outdoor rated, nor would
>> >>> it hold up if buried.
>> >>>
>> >>>
>> >>>
>> >>> bp
>> >>> <part15sbs{at}gmail{dot}com>
>> >>>
>> >>> On 11/4/2021 12:56 PM, Chuck McCown via AF wrote:
>> >>>
>> >>> Conduit. Like 1/2” corrugated microduct.
>> >>>
>> >>> From: Bill Prince
>> >>> Sent: Thursday, November 4, 2021 1:41 PM
>> >>> To: af@af.afmug.com
>> >>> Subject: Re: [AFMUG] corrugated conduit
>> >>>
>> >>>
>> >>> You talking about conduit or culvert?
>> >>>
>> >>> We replaced all of our old corrugated (galvanized) culvert(s) with
>> >>> the plastic stuff that's corrugated on the outside and smooth wall
>> >>> on the inside. Way better stuff because it doesn't trap stuff.
>> >>>
>> >>>
>> >>>
>> >>> bp
>> >>> <part15sbs{at}gmail{dot}com>
>> >>>
>> >>> On 11/4/2021 12:30 PM, Chuck McCown via AF wrote:
>> >>>
>> >>> Anyone have any opinions about using cheap corrugated conduit for
>> >>> areas where the ditch is already open?
>> >>> I have never used it. I worry it is not terribly strong and you
>> >>> probably can’t blow it.
>> >>>
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>> >>
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>>
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