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 37 users online :: 6 registered, 0 hidden and 31 guests


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

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Majestic-12 [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Source for large valves?

All non-spudgun related discussion goes here such as projects, theories, serious questions, etc. All "off-topic" posts (aka useless posting, determined by moderators) will be removed.
Sponsored 
  • Author
    Message

Source for large valves?

Unread postAuthor: D_Hall » Mon Aug 17, 2009 9:59 am

I'm looking for an actuated valve.....

Working pressure: 200 psi.
Diameter: 6" minimum.
Actuating time: Between 1 and 4 seconds.

Anybody know of a source?
  • 0

Simulation geek (GGDT / HGDT) and designer of Vera.
User avatar
D_Hall
Donating Member
Donating Member
 
Posts: 1759
Joined: Thu Feb 07, 2008 7:37 pm
Location: SoCal
Reputation: 6

Unread postAuthor: FORE!!!! » Mon Aug 17, 2009 10:10 am

i hope u got some spare change for it?

maybe this
its all i could find

http://wardvalve.com.au/index.php?page= ... &Itemid=36
  • 0

User avatar
FORE!!!!
1st Lieutenant
1st Lieutenant
 
Posts: 277
Joined: Mon Jul 06, 2009 8:14 am
Reputation: 0

Unread postAuthor: jor2daje » Mon Aug 17, 2009 10:24 am

Could you maybe just get a large butterfly valve, and add a pneumatic cylinder?
  • 0

User avatar
jor2daje
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 418
Joined: Sun Oct 05, 2008 9:41 pm
Location: Southern California
Reputation: 0

Re: Source for large valves?

Unread postAuthor: Technician1002 » Mon Aug 17, 2009 11:22 am

D_Hall wrote:I'm looking for an actuated valve.....

Working pressure: 200 psi.
Diameter: 6" minimum.
Actuating time: Between 1 and 4 seconds.

Anybody know of a source?


I have a question. What is the application of the valve? For spudding, I like valves that open fully in under 10 ms. One second is several of orders of magnitude too slow for most air cannons, even pumpkin cannons.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: jor2daje » Mon Aug 17, 2009 11:29 am

I think its probably for venting on his large combustion or hybrid he's building, just a guess.
  • 0

User avatar
jor2daje
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 418
Joined: Sun Oct 05, 2008 9:41 pm
Location: Southern California
Reputation: 0

Unread postAuthor: psycix » Mon Aug 17, 2009 12:08 pm

With your machine shop, I'd BUILD one.
  • 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: Brian the brain » Mon Aug 17, 2009 12:11 pm

That would probably be the best way....
  • 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

Sponsored

Sponsor
 


Unread postAuthor: Gippeto » Mon Aug 17, 2009 1:51 pm

Acutator;

http://www.c-a-m.com/content/products/p ... m?pid=3699

Valve;

http://www.c-a-m.com/content/products/p ... m?pid=2953

Probably overkill, but the size does limit your options. Customer service will be able to match them up for you, and likely ship as a complete unit.
  • 0

"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
Gippeto
Donating Member
Donating Member
 
Posts: 2394
Joined: Sat Jan 19, 2008 10:14 am
Location: The Great White North...Canada eh!
Reputation: 11

Re: Source for large valves?

Unread postAuthor: D_Hall » Mon Aug 17, 2009 10:08 pm

Technician1002 wrote:I have a question. What is the application of the valve?

Control of a test specimen in a wind tunnel.


And having thought about the problem some more... I'm beginning to think the solution is ganging 20 2" QEVs. That gives FAST response as well as allows me to easily control flow by varying the number of valves turned on/off at any given time.
  • 0

Simulation geek (GGDT / HGDT) and designer of Vera.
User avatar
D_Hall
Donating Member
Donating Member
 
Posts: 1759
Joined: Thu Feb 07, 2008 7:37 pm
Location: SoCal
Reputation: 6

Re: Source for large valves?

Unread postAuthor: Technician1002 » Mon Aug 17, 2009 11:45 pm

D_Hall wrote:
Technician1002 wrote:I have a question. What is the application of the valve?

Control of a test specimen in a wind tunnel.


And having thought about the problem some more... I'm beginning to think the solution is ganging 20 2" QEVs. That gives FAST response as well as allows me to easily control flow by varying the number of valves turned on/off at any given time.


For wind tunnel, I would recommend a VSD controlled compressor. The valves may work better if you already have a proper size compressor to run your tunnel. Will your air source provide enough supply to run QEV's. A high volume lower pressure application may be out the operating range of the QEV's. For wind tunnel, the QEV's may provide too much insertion loss into the stream for meeting your flow requirements.

http://www.sullair.com/corp/details/0,,CLI1_DIV61_ETI5679,00.html

Is your air supply a centrifical compressor? If so a VVVF drive may solve the requirement for variable flow. This could provide a wider operating range than is possible with EQV's and in a closed loop control can provide a dial a MPH response for automated testing.

http://en.wikipedia.org/wiki/Variable-frequency_drive

VVVF drives are not very expensive realitively speaking.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: D_Hall » Tue Aug 18, 2009 12:00 am

Air supply is not a problem.

Control of the tunnel is not a problem.

I simply have a test article that has some interesting attributes and those attributes have pneumatic controls. Note that this is a one-off test so the "nicest" solution may not be the "best" solution as cost is a heavy driver here. Which is actually another reason (from my perspective) to go with the ganged solenoid valves. It may be a bit clunky, but it can be put together in no-time flat using low-lead-time parts. In my world, time is often more expensive than hardware so if I can buy 20 2" valves for $4k and have them shipped overnight, that's often better than if I found a (say) 6" valve for $1k (good luck) if that 6" valve has a 4 week lead time.
  • 0

Simulation geek (GGDT / HGDT) and designer of Vera.
User avatar
D_Hall
Donating Member
Donating Member
 
Posts: 1759
Joined: Thu Feb 07, 2008 7:37 pm
Location: SoCal
Reputation: 6

Re: Source for large valves?

Unread postAuthor: dewey-1 » Tue Aug 18, 2009 5:50 am

D_Hall wrote:
Technician1002 wrote:I have a question. What is the application of the valve?

Control of a test specimen in a wind tunnel.


And having thought about the problem some more... I'm beginning to think the solution is ganging 20 2" QEVs. That gives FAST response as well as allows me to easily control flow by varying the number of valves turned on/off at any given time.


Have you considered using pulse valves that are used in dust collection systems?
Example is ASCO 8353 series.

http://www.ascovalve.com/Common/PDFFile ... nPulse.pdf

Here is a 1.5 inch version;

Image
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: D_Hall » Tue Aug 18, 2009 8:18 am

That's what we're talking about.

A pulse valve and a QEV are the same thing just used by different industries. If you're cleaning out pipes, you call it a pulse valve. If you're relieving a pressure vessel, you call it a QEV.

But having visited Asco's site last night, I'm currently leaning towards 10 3" valves.
  • 0

Simulation geek (GGDT / HGDT) and designer of Vera.
User avatar
D_Hall
Donating Member
Donating Member
 
Posts: 1759
Joined: Thu Feb 07, 2008 7:37 pm
Location: SoCal
Reputation: 6

Unread postAuthor: dewey-1 » Tue Aug 18, 2009 10:11 am

They are damn nice valves. I got 2 for $30 bucks off e-bay back awhile ago.

They only have a 125 psi rating. It may be marginal at 200psi.
150psi would probably be OK.

Do you plan on solenoid activation or remote air pilotting?
  • 0

User avatar
dewey-1
Major General
Major General
 
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA
Reputation: 0

Unread postAuthor: D_Hall » Tue Aug 18, 2009 1:21 pm

Solenoid activation. Well, probably solenoid activation of a 1" QEV that will act as a centralized trigger for one bank of them (I figure 2 banks IF I go this route).

And yeah, the 125 psi rating gives me some cause for pause. Thus why I say "IF" I go that route.
  • 0

Simulation geek (GGDT / HGDT) and designer of Vera.
User avatar
D_Hall
Donating Member
Donating Member
 
Posts: 1759
Joined: Thu Feb 07, 2008 7:37 pm
Location: SoCal
Reputation: 6

Next

Return to Non-Spudgun Related Discussion

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], Majestic-12 [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'