SpudFiles

Is it okay to use dwv reducers for my cannon? I can't find any 3" bushings so I have to take my 3" chamber down to a 2" port to glue in a bushing. I've seen a couple other people do it (Scott's Cannon) and I can't order anything of of mcmaster. Thanks for any help!

if its combustion its ok. pneumatic, probably not to smart.

I do not take any shortcuts, even on my combustion (which is currently in the works). Anything 0-80 PSI is SCH 40; 80 PSI any beyond is SCH 80 or some type of metal. Some people are much more willing to take risks; I have seen DWV pneumatics being taken to 120 PSI, and SCH 40 being taken to over 200 PSI.

If you are a great solvent welder, then DWV would probably be OK for a low pressure pneumatic. If you want to feel safe all the time however, spend the extra dollars and get the pressure rated parts.

It's a pneumatic, and I am a really good solvent welder. The reducer is SCH 40, BTW...

dude... just spend some extra bucks and buy some nsfpw fittings. if ur trying to save some bucks.. just ask urself: is my eye worth 4 bucks?

Where can I buy pressure rated reducers?!! (I can't order them)

there has to be some place near you that has them. like integral said, is not worth it. you could use iron parts. they are only $7-10 or so and will hold way more than any pvc will ever hold.

just wondering if you were as stupid as me and found the right reducer but thought it didn't work because it was the same size as your chamber.

If so buy a coupling and put it in there.

if u cant find a reducer... just buy the other fittings such as bushings and couplings to make the nessecary fitting. if u weld it correctly... it would be just as strong.

Actually, coupler and bushing is the most accepted way to change pipe size in pressure applications.

A coupler and bushing, both NSF-PW sch40, are what you're looking for. Open your phone book and call plumbing supply stores and sprinkler shops.

Peace,
Pete Zaria.

Thanks guys!