Reducer Bushing question

[natey14]

Well my last cannon I built someone told me that the reducer I had used was not pressure rated so I couldn't push it past 60 psi.

I'm planning on building a standard pneumatic that will be safe to 90-100 psi.

I'm planning on using 2 feet of 4" SCH40 for tank and then reduce to a 1" barrel with an orbit watermaster then having 4 feet of 1" SCH40.

I've used GGDT and no errors or warnings but I need to know how to reduce from my 4" resovior to my 1 inch orbit watermaster and barrel.

I can't find any pressure rated reducer bushings that will go from 4" to 1" or even 4" to 3".

Your help would be much appreciated, thanks!

[Technician]

Try McMaster.com that where I buy.

[natey14]

Ya but they don't seem to have 4" to 1" reducer bushings. Anyone have any suggestions?

Would it matter if I went from 4" to 2" then from 2" to 1 "?
And for it to be pressure rated I want it to say NSF?

The one's at mcmaster say ASTM and NSF.

But then they say never use plastic pipe fittings for compressed air or gas?

[Technician]

Every manufacturer of PVC says never use plastic pipe fittings for compressed air or gas

[natey14]

So if I went with this 4" to 2" socket-weld reducer bushing
And then went to a 2" to 1" socket-weld reducer bushing, I would be able to be safe at 100 psi?

[drac]

Yes, it would be safe. And fix your link, it stretched the forum beyond recognition!

[natey14]

Thanks for the help guys, just wanted to make sure I got everything right BEFORE I put it together =)

[Andrew52]

wellthat will be a cool gun you should have a few barrels make it more versatile if you jhva ethe money cus these cannons can burn holes inn your wallet

[Shrimphead]

If its pressure rated, it'll say nsf-pw.

[spudshot]

you can also go to http://www.plumbingsupply.com they're cheaper and if i recall, all of there fittings are pressure rated