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 59 users online :: 6 registered, 0 hidden and 53 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Balanced Poppet Valve

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

Balanced Poppet Valve

Unread postAuthor: AlphaOmega » Sat Feb 06, 2010 5:21 am

I'm sure this information is on this sight somewhere I know BTB and Far_Cry have been successful but could someone give me a link to a diagram of a perfectly balanced poppet valve. I have a few idea's in mind. Also if the poppet we're perfectly balanced is it right that to an extent that no matter how high the pressure you will still just need to overcome the force of the return spring to open the poppet. Seems if this we're true major companies would be doing this due to the low amount of force needed to open the valve. Well i'm not sure if this is right. So any help that anyone can offer would be greatly appreciated. I am Also curious as to what everyone would think of this as a main valve on a semi-auto small caliber launcher.:?:

Thanks In Advance+-+-+-+-+Alpha
  • 0

Last edited by AlphaOmega on Sat Feb 06, 2010 9:09 am, edited 1 time in total.
Pneumatically Deconstructed
User avatar
AlphaOmega
Private
Private
 
Posts: 24
Joined: Fri Sep 04, 2009 6:07 pm
Reputation: 0

Unread postAuthor: john bunsenburner » Sat Feb 06, 2010 6:32 am

That format is wierd as hell. Did you do something wierd of is SF to blame? PM a mod is latter is the case.
  • 0

"Did you ever stop to think that out of the seven deadly sins envy is the only one which doesn't give the sinner even momentary pleasure"-George Will
User avatar
john bunsenburner
Major General
Major General
 
Posts: 1446
Joined: Sun Oct 19, 2008 5:13 am
Reputation: 0

Unread postAuthor: POLAND_SPUD » Sat Feb 06, 2010 9:13 am

I don't think there are balanced poppet valves
poppet itself is something like a piston in a QEV - it's just a piece of some material, usually rubber

I think what you you meant is a spool valve
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: psycix » Sat Feb 06, 2010 5:10 pm

What he means is a balanced pushbutton valve.

In short:
T piece, some fittings, two pistons on a rod, and a spring.
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: POLAND_SPUD » Sat Feb 06, 2010 5:41 pm

yeah I know but technically it's a spool valve
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: Brian the brain » Sun Feb 07, 2010 7:47 am

Once a valve is balanced it means it operates pressure independant
( apart from some increase in O-ring friction wich requires some lube to fix)

Yes, a balanced hammer valve ( can we please refer to it as BHV ?!?!) is essentially the same as a balanced push button valve or a balanced poppet valve..

Just like piston valves, there can be some difference in how it is set up.
Again we can make them chamber sealing or barrel sealing.

The push button valve was barrel sealing, if I were to flip the sealing face on the reg I made out of it, I'd get a chamber sealing one.

The latter is probably best as a main valve, the other one would be better or easier as an exhaust valve.
I think it;s great if people would start to use this principle more often as it is in many ways superior.
I don't have the time or tools ( yet) to massproduce them ..or else I would be throwing design after design at you guys.
The possibilities are endless.
I would also like to combine the valve with my snapvalve.Once you push it gently it will pop open like crazy..or..after exhausting...shut with a lot of force.
Enough to play around with ..

Also, in stead of just push-valves, the principle would aslo work with pull valves.The main thing is you have a sealing face, with a certain exposed cross section and a counter piston with the same diameter as the exposed surface.
They cancel each other out and only springforce is what keeps the valve closed.
  • 0

Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
User avatar
Brian the brain
Moderator
Moderator
 
Posts: 3494
Joined: Mon Dec 05, 2005 2:06 am
Location: Holland
Country: Netherlands (nl)
Reputation: 29

Unread postAuthor: turner » Wed Feb 17, 2010 10:03 pm

id look at the new smart parts impulse diagrams
  • 0


turner
Staff Sergeant
Staff Sergeant
 
Posts: 113
Joined: Fri Aug 07, 2009 11:48 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: ALIHISGREAT » Thu Feb 18, 2010 1:28 pm

Image
?
  • 0

<a href="http://www.bungie.net/stats/halo3/default.aspx?player=ALI H IS GREAT"><img src="http://www.bungie.net/card/halo3/ALI H IS GREAT.ashx"></a>
Image
User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: ramses » Fri Feb 19, 2010 4:59 pm

I think he's talking about a pressure independent valve that will snap open like a piston valve. I am toying with some designs, but I will have to get aluminum and boring bars first...
  • 0

POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
User avatar
ramses
Major General
Major General
 
Posts: 1679
Joined: Thu May 29, 2008 6:50 pm
Reputation: 3

Unread postAuthor: iknowmy3tables » Sat Feb 20, 2010 9:02 pm

you mean like this?
you also can use a blowgun backwards
  • 0

Attachments
like this.PNG
like this.PNG (6.51 KiB) Viewed 1427 times

iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Unread postAuthor: maverik94 » Sat Feb 20, 2010 11:44 pm

iknowmy3tables, your design is cool, but if I'm not mistaken, that would tear up the o-rings pretty fast. Correct me if I'm wrong...
  • 0

"You can't be friends with anyone if you aren't friends with yourself."
"I'd rather be hated for who I am, than loved for who I'm not." -André Gide
Give me a lever long enough, and a fulcrum on which to place it and I shall move the world.
–Archimedes
Defeat is always momentary.
–Carl Denham

Current Project: None, I'm in Spudremission.
User avatar
maverik94
Colonel
Colonel
 
Posts: 558
Joined: Wed Jan 21, 2009 4:48 pm
Reputation: 0

Unread postAuthor: iknowmy3tables » Sun Feb 21, 2010 12:46 am

no, if you made a really sharp edge it would but control valves, blowguns, sleeve valves and many valves use sliding rubber seals that slide across gaps, so I'm afraid you are mistaken
I don't believe you have seen clide's guns and the o-ring work in his valves
also there is just no reason to depict how smooth the edges are in a simple diagrams
  • 0


iknowmy3tables
Major General
Major General
 
Posts: 1558
Joined: Fri Dec 15, 2006 3:57 pm
Location: maryland
Country: United States (us)
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'