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How Do You Make A Piston Valve?

Posted: Mon Jun 07, 2010 5:03 pm
by someguy314
I was wondering how would you make the piston for the piston valve? Like is there like a part I can find at like a hardware store?

btw this is my first post on Spudfiles! :)

Posted: Mon Jun 07, 2010 5:09 pm
by jrrdw
Welcome to Spudfiles.

Please use the Wiki to search for answers and the disscusion and showcase sections as well. Search "piston valves" for starters.

Posted: Mon Jun 07, 2010 5:24 pm
by Marffy
What kind of piston valve do you wanna make? how big do you wanna make it?

Posted: Mon Jun 07, 2010 5:33 pm
by someguy314
Marffy wrote:What kind of piston valve do you wanna make? how big do you wanna make it?
Well I was thinking about making a chamber sealing tee valve. And the size. I don't want it to be really big just something small that won't be really expensive.

I did what jrrdw told me and thought about using just a end cap with a hole in the middle.

Posted: Mon Jun 07, 2010 5:58 pm
by Gun Freak
Don't start with a chamber sealer, do a barrel sealer first, they are MUCH easier to make. Look around in the showcase and you can find many examples, my Superna for example.

Posted: Mon Jun 07, 2010 6:03 pm
by someguy314
Gun Freak wrote:Don't start with a chamber sealer, do a barrel sealer first, they are MUCH easier to make. Look around in the showcase and you can find many examples, my Superna for example.
Awsome will do. Thanks!

Posted: Mon Jun 07, 2010 7:32 pm
by Technician1002
In my Mouse Musket thread, see my sig, I show how to build a small piston on a drill press using cutting board plastic. The thread covers a coaxial design and not a valve in a T, but the piston technique can be used in a T for smaller pistons. The largest I made this way is 2 inch.

Scroll down the page to my second post that covers making a replacement piston to fit this cannon.

Posted: Mon Jun 07, 2010 7:45 pm
by Gun Freak
If I were you, I would go with a coaxial design, they are very simple to make and require the least parts of any piston valve.

Posted: Tue Jun 08, 2010 7:17 am
by someguy314
cool will do

Posted: Tue Jun 08, 2010 7:25 am
by boyntonstu
someguy314 wrote:cool will do
3/4" Oak dowel and 2 "O" rings and a 1/2" faucet washer gets me 1,000 fps at 600 psi in the Trom-Boyn.

That should be easy enough for you and all parts are store bought.

Posted: Tue Jun 08, 2010 8:06 am
by someguy314
boyntonstu wrote:
someguy314 wrote:cool will do
3/4" Oak dowel and 2 "O" rings and a 1/2" faucet washer gets me 1,000 fps at 600 psi in the Trom-Boyn.

That should be easy enough for you and all parts are store bought.
Sweet I'll try it!

Posted: Tue Jun 08, 2010 11:27 am
by jackssmirkingrevenge
You might want to experience the joys of epoxy casting ;)

Posted: Tue Jun 08, 2010 11:37 am
by someguy314
jackssmirkingrevenge wrote:You might want to experience the joys of epoxy casting ;)
Hmm I'll have to think about all these options. But still keep them coming!

Posted: Tue Jun 08, 2010 8:01 pm
by clemsonguy1125
http://www.instructables.com/id/Golfbal ... That-Shoo/
Heres a 2 inch one, might be a bit larger than what you want but it could be scaled down

Posted: Tue Jun 08, 2010 8:56 pm
by someguy314
clemsonguy1125 wrote:http://www.instructables.com/id/Golfbal ... That-Shoo/
Heres a 2 inch one, might be a bit larger than what you want but it could be scaled down
Awsome I'll probably do that one! Thanks!