That's a long run, I used to do a lot of work installing fiber through underground conduit.

I doubt that a shop vac will do the trick, they make duct rodders, but at 1000' that is even a tall order, it's a lot of fiberglass to push. Check out something like this, just make sure that you have a few people to help.

[Link: dcddesign.com]

Use a cotton ball attached to nylon sewing thread, tape off all but a quarter of the feed end, this is to maintain the vac pressure over distance. when you get the cotton ball out, tie the thread on to heavier nylon string and then pull that threw by hand. Cheep and efficient solution.

Part of the puzzle here is getting all the parts to work well.

It is mechanically simple to pull a sail from one end to the other. A string can trail behind from the other end, just slipping into the conduit. But even if you had a perfect vacuum and thus zero PSI at the vacuum end, you'll only have atmospheric pressure of about 15 PSI pushing your sail. That's not much pressure.

It's easy to apply a hundred PSI to the end of a conduit to blow a sail through. But it's not so easy to do that, seal the blowing end, and at the same time have a string feed into the blowing end. That's automatically a leak.

In either case, the further you have moved the sail, the weaker is your force on it, because the string has weight and friction -- I'd suggest you use a very light fishing line, then use that to pull in something stronger -- and because any leaks in the conduit will have the effect of cumulatively weakening the pulling or pushing force.

Then there's the supposedly sealed PVC conduit with an inch of water in it!

Maybe one of these guys?

I was going to suggest a ferret.

You crack me up. I read a story about a school that used a rat, named Rattie, for just this purpose. It was able to work its way through old crummy school walls to do some wire pulls that the drills couldn't do.

If you could get the smell of food at the other end, that method might be pretty good.

This should do the trick.

Try what others have said because they're rather simple solutions.
If you need to escalate, try this:
1. Install a J-Box on the feed end where you coil a length of string/tape/fish-line.
2. Install a cap with threaded compressed air fitting (I have a picture of one if you need to see it).
3. Pressurize the line until the ball/sail/whatever at the end of coiled string moves forward pulling the coiled line.
4. Remove the cap and feed (coil) some more line.

This is a slower process, but one we've successfully done where nothing else seemed to work.

If this is done outside, we had a project where we had to resort to using water instead of air pressure to push the feeder thru the conduit.
Hell, we had a job years ago where we used water (volume & pressure) just to find 'man holes' that got buried and no one knew where they were at.

Bottom line, 1000 ft with no pull-points just became T&M job in my book.

Stamp, is that you?

What about using an air compressor to push what amounts to a sail from one end and pull with a heavy-suction shop vac at the other? As long as the seal is good enough to get it to move well without catching on anything (it was installed without cobbling it together and reversing any of the joints, right?), it should work. I would probably use a plastic cap that fits in/on the end you're working from and thread an air coupling into one hole and leave a small hole (de-burred and smooth) for the line to pass through, but not large enough to lose much pressure.

To the OP- is there any downward slope to the conduit, or is it all level? If there's a slope, use that to your advantage.

Greenlee and a mouse

[Link: build.com]

You can rent these.

It will blow the pull string through 1000' (no water in the pipe, it will blow water out of a pipe too) in about 90 seconds.

There was talk about how to seal the conduit when using a compressor to push. What I have done is take a piece of conduit and drill a small hole at an angle in the side that the pull string is run through. Then connect this piece of conduit to the conduit you are running through. I learned this from an commercial electrical that did more conduit pulls than I will ever dream of doing.

When there has been an issue I have used a compressor on one end and a vacuum on the other.

Ah, my friend Russ, the stories he tells. He was once working, I believe on the strip in Las Vegas, where... how does this go... some one or ones was/were real jackholes. These guys had a long conduit run, and some in Russ's group were so ticked off by the other guys that they took to peeing into the conduit. Don't ask about details I can't answer...

The upshot, literally, is that before they ran any wires into the conduit, they wanted to be sure no sand and stuff had gotten into the tubes, so they blew them out. A couple of the jerks were near the exit end, and had their second shower of the day. Liquid that's gone a distance through a tube gets up quite a speed!

Estes model rocket, C-Stage Motor, tie pull string to fin.

[Link: estesrockets.com]

;-9

Mogul...........that is really funny.................ROFLMAO