Hello all,
I'm trying to find small check valves that I can put into a 2" piston, but everywhereive gone, the check valves are larger than my actual piston.
Does anyone know where I can find small check valves?
Posted: Sat Jan 12, 2013 10:06 am
by jackssmirkingrevenge
Posted: Sat Jan 12, 2013 10:11 am
by acs2997
Where would I find something like that? That's pretty much exactly what I need. Wait, isn't that the valve used on bikes? Maybe I'm wrong but that's what's used on racing bikes
Thanks! Yeah, my friends dad does a lot of cycling, I'm sure I can get one from him. Thanks, I never would've thought to use one of those.
Posted: Sat Jan 12, 2013 10:25 am
by jackssmirkingrevenge
You could also use a schrader instead of a presta, but because of its internal spring you will have significantly lower pressure in the chamber than in the pilot (assuming you want this for an o-ringed piston).
Posted: Sat Jan 12, 2013 10:54 am
by acs2997
Yeah, I'll probably go with the presta. How fast will it beagle to fill up e air chamber? Will it significantly restrict how fast it fills? I'm trying to make a semiauto gun, and I want the rate of fire as high as possible
Posted: Sat Jan 12, 2013 12:47 pm
by jackssmirkingrevenge
acs2997 wrote:How fast will it beagle to fill up e air chamber? Will it significantly restrict how fast it fills?
Pretty fast
[youtube][/youtube]
Depends on the size of your chamber, a largish one might take a couple of seconds to fully pressurise.
Posted: Sat Jan 12, 2013 12:59 pm
by acs2997
I'm only shhooting paintballs, I'm not Punkin Chuckin here. The air chamber is about a foot and a half of 2" pvc. Thnk thats a god size?
Btw, I love the video
Posted: Sat Jan 12, 2013 2:59 pm
by Brian the brain
God size would be slightly bigger.
A rubber flap over a tiny hole will work as a checkvalve.
Assuming the sealing face will be made outof a sheet of rubber...all you would need is a tiny hole on the side, between the seat diameter and the outside.
have the rubber sheet cover the entire front of the piston....and drill...
Posted: Sat Jan 12, 2013 6:46 pm
by mark.f
If your piston is o-ringed (and actually seals in the carriage), you probably don't want a completely airtight check valve too. Leaving it charged, a small leak in the pilot could reduce pilot pressure enough to fire accidentally.
Clide (a user on these forums) made check valves using a male-female adapter and plug, a small spring, and an airsoft bb for this exact purpose.
Posted: Sat Jan 12, 2013 6:57 pm
by acs2997
Is that in his slider?
Posted: Sat Jan 12, 2013 6:59 pm
by mark.f
No, it's the Straight Through Valve (inline piston valve). But he used them on a lot of his barrel sealers.
Posted: Sat Jan 12, 2013 7:17 pm
by acs2997
Alright. I'll play around with it a little bit, I'll see what works and what doesn't. Thanks for the input, I've had an experience with accidental firings, not exactly the best day in my life
