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Pipe types: pvc and fitting problems

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Pipe types: pvc and fitting problems

Unread postAuthor: megalomaniac » Tue Jun 12, 2007 4:19 pm

Hello everyone, I have a problem with fittings for a pvc pipe. I'm using pvc 4" sewer pipe (not sure if its safe and it doesn't fit) and it won't fit a 4" to 2" reducer or a 4" female adapter, do I need a fitting to make it fit or do I need different a pipe?
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Unread postAuthor: Spyider » Tue Jun 12, 2007 4:27 pm

if its not even safe are you nuts don't use that garbage, throw it out and don't be a cheapo and go buy a pipe that fits properly.
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Unread postAuthor: megalomaniac » Tue Jun 12, 2007 4:34 pm

Yeah, thats why i'm not using it and asking you people(s) what to use.
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Unread postAuthor: hi » Tue Jun 12, 2007 5:01 pm

you just need a coupler. if its combustion its fine, pneumatic its not safe.
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Unread postAuthor: megalomaniac » Tue Jun 12, 2007 5:09 pm

So sewer pipe is ok for combustion? Its solid core by the way.
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Unread postAuthor: hi » Tue Jun 12, 2007 5:21 pm

yes its fine, i use it all the time for combustions. im assuming this is ABS pipe correct?
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: megalomaniac » Tue Jun 12, 2007 5:25 pm

No, its pvc which I stated in the original post.
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Unread postAuthor: Velocity » Tue Jun 12, 2007 5:57 pm

Is it that green PVC? I really wouldn't use it; it usually has very thin walls (unless it is large diameter, where it then can be used for big combustions).
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Unread postAuthor: megalomaniac » Tue Jun 12, 2007 6:00 pm

Its regular white colored pvc, it does seem thin though. What should I use instead?
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Unread postAuthor: iPaintball » Tue Jun 12, 2007 6:13 pm

Does it have any markings on it?
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Unread postAuthor: MrCrowley » Tue Jun 12, 2007 11:31 pm

Are you metric or linear?

im taking you use linear from your original post, look for pipe that is marked with 'sch-40' or a higher sch. e.g sch-80.
Now thats only the thickness of the pipe, have a look to see if it is pressure rated by looking for 'nsf-pw' now if it has that the pipe should have a pressure rating e.g 260psi.

Thats the pipe you want, most likely your mixing dwv/down pipe with pressure rated fittings.

Check out this site:
http://www.doomlabs.com/science/pipe_specs.html
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Unread postAuthor: frankrede » Sat Jun 16, 2007 10:47 pm

I have never seen solid wall pvc in 4" that isn't pressure rated
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Unread postAuthor: rednecktatertosser » Sat Jun 16, 2007 10:59 pm

question: i have pipe labeled NSF-DWV but it also gas a presure rating on it, is that still safe to use?
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Unread postAuthor: hi » Sat Jun 16, 2007 11:04 pm

i have that same pipe and it works fine. it is good to what it is rated for.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: rednecktatertosser » Sat Jun 16, 2007 11:05 pm

ok thanks i just wanted to make sure.
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