Blasting a downpipe with compressed air - GIF

Blasting a downpipe with compressed air.

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Previously:

https://www.homemadetools.net/forum/...122#post153630
https://www.homemadetools.net/forum/...935#post133722
https://www.homemadetools.net/forum/...968#post137609
https://www.homemadetools.net/forum/...556#post136129
https://www.homemadetools.net/forum/...670#post193641

HA, I was expecting that pipe to "explode". They are not seamed together very well, he was lucky.

Quote:

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Originally Posted by hemmjo

HA, I was expecting that pipe to "explode". They are not seamed together very well, he was lucky.

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Likewise. Seen it happen, another one is pressurising drains. more than one has been cracked or joints blown apart.

I have a brass ball, about 1-1/4" diameter, I just drop that down the top, it works pretty good at pushing all the detritus out.

I lived in an old house where there were no storm sewers and lots of storm water found its way into the sanitary sewers causing our basement floor drains to back-up. So I bought an expanding rubber plug to plug the drain. I got the idea to make one with a valve stem. Hit that with an air tank and it literally blew the iron cap off in the middle of the street and it sent a column of sewage several feet in the air.

Not sure if that was a great idea or not. It seemed to work though.