Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 38 users online :: 4 registered, 0 hidden and 34 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

valve leakage

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
Sponsored 
  • Author
    Message

valve leakage

Unread postAuthor: subterranean » Sat Oct 28, 2006 11:27 pm

im currently building my first pneumatic and im going to be using a sprinkler valve. my chamber is going to be 3"x6' ive heard that these valves have a slow leak in them and im wondering if it will take so much time to fill the chamber that the leaking would move the potato down the barrel


p.s. is a pneumatic cannon with 1.5"x8' barrel with a 3"x(6' or 10')chamber going to be a very good cannon or is the ratio pretty messed up?
  • 0

User avatar
subterranean
Master Sergeant
Master Sergeant
 
Posts: 171
Joined: Sat Oct 21, 2006 11:39 am
Location: columbus, ohio
Reputation: 0

Unread postAuthor: )DEMON( » Sun Oct 29, 2006 12:18 am

Once sprinkler valves get to a few Psi they seal so you really don't need to worry about this. You chamber and barrel should be fine. As long as you use lots of teflon tape, make sure there is nothing on the threads or in the way and tighten your fittings then nothing should leak.
  • 0

Forever dreaming...
User avatar
)DEMON(
Major General
Major General
 
Posts: 1391
Joined: Sun Mar 12, 2006 1:22 pm
Location: Johannesburg South Africa
Reputation: 0

Unread postAuthor: jrrdw » Sun Oct 29, 2006 6:41 am

My sprinkler valve acts exactly that way, i have no problem when useing my air compressor to pump it up, but i don't know how other air supplies will work. Thats something to think about.
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6539
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: subterranean » Sun Oct 29, 2006 11:17 am

so the barrel chmaber ratio is ok, because i havent seen my cannons were the chmaber is longer than the barrel
  • 0

User avatar
subterranean
Master Sergeant
Master Sergeant
 
Posts: 171
Joined: Sat Oct 21, 2006 11:39 am
Location: columbus, ohio
Reputation: 0

Unread postAuthor: Billy Bob » Sun Oct 29, 2006 1:22 pm

Where do you buy the sprinkler valves ?
Where I live there are no usefull valvues only ball valve and crap slow magnetic valves. :roll:

My Buddy gives me an "Asco" 1" membran valve. I rebuild that like all your do that in your pictures i seen. I think about build me an bigger pneumatic gun with two valves but one 1" valve should be cost 165 €.
I say shi*. The sprinkler valves look brilliant. :shock:
  • 0

User avatar
Billy Bob
Corporal
Corporal
 
Posts: 72
Joined: Sat Oct 28, 2006 11:53 am
Location: Germany
Reputation: 0

Unread postAuthor: ProfessorAmadeus » Sun Oct 29, 2006 1:27 pm

Well dumping that much air through a sprinkler valve is going to be useless. maybe try a 3 inch barrel sealer. They arnt' very hard to make and will make you cannon worth you while. With a 10 ft chamber and a 8 ft barrel you going to use some of the air while shooting and the rest will be wasted and will just take longer to fill.
  • 0

Insomniac wrote:Hey why am I a goose???? Why not somthing a little more awe inspireing, like an eagle or something? LOL

SOO CUTE!! OMG!! I COULD JUST LICK YOU!!
User avatar
ProfessorAmadeus
Brigadier General
Brigadier General
 
Posts: 1046
Joined: Fri Apr 28, 2006 5:39 pm
Location: texas
Reputation: 0

Unread postAuthor: subterranean » Sun Oct 29, 2006 4:47 pm

so how long do you think i should make the chamber? so that all of the air is used?
  • 0

User avatar
subterranean
Master Sergeant
Master Sergeant
 
Posts: 171
Joined: Sat Oct 21, 2006 11:39 am
Location: columbus, ohio
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: squeaks » Sun Oct 29, 2006 9:31 pm

Play around with the GGDT, it'll tell you what you want to know.
  • 0


squeaks
Captain
Captain
 
Posts: 326
Joined: Sun Oct 01, 2006 5:45 pm
Location: Enoch, UT(next to Cedar City)
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Yahoo [Bot]

Reputation System ©'