SpudFiles

ok i got 2 questions

1. i want to make a piston valve but i don't have to equipment to machine pvc so i decided i will either make it out of wax or epoxy. my question is could i just take a peace of 2" pvc and coat the inside with oil and then just poor in my melted wax?

2. i seen this site http://www.members.tripod.com/potatogun ... valve2.htm

and with that rubber washer thing is their a hole in that or does the air enter threw the sides of that metal washer.

thanks

Don't make one out of wax. It will break on the first shot.
Unless you use 5 psi
Also that valve on that site is a chamber sealer, don't make one. If I were you I wouldn't make a piston valve at all, they are too much trouble. But if you do decide to make one, make a barrel sealer.

oh ok well i guess ill make it out of epoxy then but that sounds hard lol

Haha Here you go

If you're making a 2" piston 1-1/4" PVC SCH-40 fittings fit very well in 2" SCH-40 pipe, and with patience can be made to include O-ring grooves by spacing pieces of fittings over some 1-1/4" pipe or a 1-1/4" male fitting like a plug.

mark.f wrote:If you're making a 2" piston 1-1/4" PVC SCH-40 fittings fit very well in 2" SCH-40 pipe, and with patience can be made to include O-ring grooves by spacing pieces of fittings over some 1-1/4" pipe or a 1-1/4" male fitting like a plug.

http://www.mediafire.com/?yyay0yzvdqt

If I were you I wouldn't make a piston valve at all, they are too much trouble. But if you do decide to make one, make a barrel sealer.

Just because you can't get one to work

You have to figure out how to get one working sometime, so you may as well start now. They are incredibly useful. Though, I wouldn't recommend a piston valve for a first build.

this isnt my first build i built one with a sprinkuler valve that i modded. i just havent put it on this site yet because it was winter and i couldnt shoot it but ill get it on this site as soon as i can borrow someones camera.


hey would this work?

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 602_263622

Any 5 minute epoxy from the local hardware store should work. A longer dry time would be even better since you would not be rushing aroung once you have the epoxy mixed.

Hubb wrote:

mark.f wrote:If you're making a 2" piston 1-1/4" PVC SCH-40 fittings fit very well in 2" SCH-40 pipe, and with patience can be made to include O-ring grooves by spacing pieces of fittings over some 1-1/4" pipe or a 1-1/4" male fitting like a plug.

http://www.mediafire.com/?yyay0yzvdqt

http://i43.tinypic.com/143kni8.jpg

Clide was very helpful when I was going about making my first o-ringed piston valve.