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I have a friend with a metal lathe and is a highly skilled metal worker. Would an aluminum piston be a good idea?

If he can hollow it out, put a cap on it. weight might be a problem

http://i569.photobucket.com/albums/ss13 ... piston.jpg

Let me know if you need help

Aluminium is already pretty damn light, for a three inch piston, it would probably weigh the same as a hot glue 2" piston if it was machined right. Regardless of that, piston weight isn't that big of an issue anyway, as long as you keep it at a reasonable weight.

Ok, cool, I might try that. Homedepot or lowes wouldn't stock sch40 3" tees and fittings and such would they?

Mrcrouse1 wrote:Ok, cool, I might try that. Homedepot or lowes wouldn't stock sch40 3" tees and fittings and such would they?

They do but they aren't pressure rated.

Then where would I get a 3" tee that is pressure rated? Link to the acctual tee would be nice. I found one on mcmaster and grainger, both are sch 40, but mcmaster says it is rated at 0psi...

Mrcrouse1 wrote:Then where would I get a 3" tee that is pressure rated? Link to the acctual tee would be nice. I found one on mcmaster and grainger, both are sch 40, but mcmaster says it is rated at 0psi...

This site has a good selection sprinkler.com

Hi
SCH40 3" is rated at 260psi Max 70-120 should be safe, Home Depot sells it, make sure you don't get SCH20 Drain its very thin (Lets be Save) I lucked out and was able to use SCH80 Tee's from left overs on a job at work and decided to do all of it in sch80. cost more but 3" is rated at 370 2" is 400. McMaster-carr has SCH80 u can find it online cheaper. If you need help just email me jimschouster@yahoo.com

http://s569.photobucket.com/albums/ss139/jimschouster/