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 40 users online :: 5 registered, 0 hidden and 35 guests


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

Registered users: Bing [Bot], Google Adsense [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

Experimental machined HPA 1 inch 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

Experimental machined HPA 1 inch valve

Unread postAuthor: High-PSI » Fri May 11, 2012 9:05 pm

This valve started as a one inch diaphragm valve that has a bad cap and diaphragm. So, starting with just the valve body, I machined a cylinder and piston to convert it to a proper piston valve. I recently blew the diaphragm in an identical valve at 600 psi. So, I wanted to see how much pressure I could reliably run through this style valve with a machined aluminum piston and cylinder. Well, I have fired and fired and fired this thing (dry firing as you see it) all the way up to 750 psi without any problems. This thing sounds like a bomb when fired!

I have disassembled the valve numerous times looking for any damage or signs of premature wear and none are present. I am VERY pleased with this valve. I plan on making a one inch bore cannon with this valve firing slugs at 800 psi.

This valve is an experiment used to aquire knowledge on piston design and dynamics for my upcoming HPA coax pistol.

Anyway, enjoy the pics........

Matt
  • 0

Attachments
new valve1.jpg
new valve2.jpg
new valve3.jpg
Exotic E-bike builder, air cannon builder, and overall crack-pot. ;~)

High-PSI
2nd Lieutenant
2nd Lieutenant
 
Posts: 231
Joined: Sat Oct 09, 2010 7:43 pm
Location: Nothern Illinois
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri May 11, 2012 11:05 pm

Excellent job! It would be interesting to compare performance with the standard diaphragm valve.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Gun Freak » Mon May 14, 2012 3:28 pm

Nice. I've only seen it done one other time. Great work.
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: whoa044 » Mon Jun 04, 2012 8:35 pm

You could make quite a profit off of selling modified valves

A 1" 750psi rated valve could sell for $200...
  • 0


whoa044
Corporal
Corporal
 
Posts: 79
Joined: Thu Sep 23, 2010 7:03 pm
Reputation: 0

Unread postAuthor: High-PSI » Mon Jun 04, 2012 8:54 pm

Hmm, I would wonder about the liability.

The big issue is, the valve body of this is $55. The pilot valve is $80, and the rest of the machining would cost about $55 to $65 more.

This stuff does get pricey.

Matt
  • 0

Exotic E-bike builder, air cannon builder, and overall crack-pot. ;~)

High-PSI
2nd Lieutenant
2nd Lieutenant
 
Posts: 231
Joined: Sat Oct 09, 2010 7:43 pm
Location: Nothern Illinois
Reputation: 0

Unread postAuthor: Lockednloaded » Mon Jun 04, 2012 9:14 pm

Liability is not an issue if you're selling "no nonsense irrigation valves" just put a disclaimer not to use them for anything but proper commercial/industrial applications. Anyway, I feel they'd be very popular without the pilot valve if you could figure out a way to bring the price down and still make some money for yourself
  • 0

I love lamp
User avatar
Lockednloaded
Major General
Major General
 
Posts: 1558
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Reputation: 0

Unread postAuthor: MrCrowley » Tue Jun 05, 2012 2:01 am

Beautiful work! I wouldn't be surprised if someone with a fair amount of cash laying around was interested in buying from you. The Ultimate Spudgun store seems to show that people do indeed pay for quality.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Sponsored

Sponsor
 


Unread postAuthor: jackssmirkingrevenge » Tue Jun 05, 2012 2:07 am

Yup, an all-metal version of a "standard" sprinkler valve cannon would certainly look pretty cool :D
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: High-PSI » Tue Jun 05, 2012 7:37 am

I am in the process of converting my 1/2 inch bore rifle to use this valve. I will report back on the performance when I have more data.

I have fired the valve at over 800 psi at this point and it operates wonderfully.

Like anything, there are benefits and drawbacks to any design. My big 2 inch cannon cost me about $500 to build, but is good for 400 psi and over 2,000 ft pounds of muzzle energy (you would be shocked how much kick that thing has. It is literally painful to shoot). But, I would have to get $1,000 or more for it to be worth the work it took to build. Plus, how do you air the darn thing up? I had to build a compressor to do the job. It gets pretty involved when you go over about 150 psi. But, that is where the fun really begins.........

I already manufacture products for resale. I have been through the production and marketting process. I am fine building stuff to resell. I just want to make sure everything is fully tested and refined before I would take that step on this.

I appreciate the kudos, though. I am also open to suggestions. I know this type of valve tends to have much turbulence through it due to the design. But, at these pressures, that condition is mitigated.

Matt
  • 0

Exotic E-bike builder, air cannon builder, and overall crack-pot. ;~)

High-PSI
2nd Lieutenant
2nd Lieutenant
 
Posts: 231
Joined: Sat Oct 09, 2010 7:43 pm
Location: Nothern Illinois
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Tue Jun 05, 2012 8:24 am

I am also open to suggestions. I know this type of valve tends to have much turbulence through it due to the design.


Why not go for the ultimate and dispense with the valve altogether?

The compound rounds by USG would make and ideal basis for such a project, and in terms of performance there's no better valve than no valve at all ;) a burst disk would yield similar performance, but is a pain in the buttocks to replace.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Brian the brain » Tue Jun 05, 2012 3:10 pm

I've only seen it done one other time


I still keep it in my workshop...
Just a 1/2" one ...but still.. :D

Looks awesome!!
Much better than mine really!
  • 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: High-PSI » Tue Jun 05, 2012 3:43 pm

Do you have any pictures you can post?

Matt
  • 0

Exotic E-bike builder, air cannon builder, and overall crack-pot. ;~)

High-PSI
2nd Lieutenant
2nd Lieutenant
 
Posts: 231
Joined: Sat Oct 09, 2010 7:43 pm
Location: Nothern Illinois
Reputation: 0

Unread postAuthor: Brian the brain » Tue Jun 05, 2012 4:27 pm

Here is the only one I have.
It is taken from a valve manufacturer's magazine ( Bürkert) featuring my report on the aircannon demo I did at the European Chunkin event for wich they had supported me.

It can be seen in the middle pic on the right.

a nice sidenote is that one year later they allowed aircannons to compete in the actual competition.
Without me... :roll:
  • 0

Attachments
BrianinBubblemagazine.jpg
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

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'