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 68 users online :: 5 registered, 0 hidden and 63 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [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

Machined inline diaphragm->piston valve mod.

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

Machined inline diaphragm->piston valve mod.

Unread postAuthor: psycix » Sun Sep 20, 2009 6:57 am

BTB handed me a brass sprinkler-type diaphragm valve, of which he blew the diaphragm. He asked if I could "machine something" for it.
Well of course I could!

Original valve + machined block.
Image

Block on top of it (not yet bolted down). Black stuff are two types of rubber sheet which are used as sealing face and gasket.
Image

Disassembled parts.
Image

Piston in its place.
Image

The only thing that was not machined on a mill/lathe is the cone on the piston. This picture proves that I can also build awesome stuff without the use of a lathe or mill. ;)
Just a drill clamped in the vice, and some sharp or rough tools.
Image

A few specs:
-1/2" valve
-1/4" threads to be tapped in the top.
-20mm piston made from Delrin rod.
-Piston diameter is only 0.01 to 0.02 mm smaller then housing's, near airtight without friction.

This valve will probably serve as pilot valve on BTB's "Mr Porter".
  • 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: jrrdw » Sun Sep 20, 2009 7:22 am

Nice work. Question, Why not do the taper with the lathe? Doesn't the head of your lathe swivel?
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6538
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: POLAND_SPUD » Sun Sep 20, 2009 7:29 am

wow that's amazing...
I lolled at afghan lathe but these things really work

it seems that soon you can start supplying us with HP spool valves :wink:
  • 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 » Sun Sep 20, 2009 8:12 am

jrrdw wrote:Nice work. Question, Why not do the taper with the lathe?
I could've done it on the real lathe, but that would give a straight cone, and I wanted it to be curved.

POLAND_SPUD wrote:it seems that soon you can start supplying us with HP spool valves :wink:
Draw something up and transfer the material and shipping cost onto my bank account. :)
No joke, I'd love to produce valves for people.
  • 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 » Sun Sep 20, 2009 9:00 am

do you plan to build a HPA gun with a custom QEV or something like that?

Draw something up and transfer the material and shipping cost onto my bank account

not yet but I might need something in the near future :)
  • 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 » Sun Sep 20, 2009 9:51 am

No (not yet). I am currently planning to build a pump action hammervalve gun, and then a pen gun.
  • 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 Sep 21, 2009 10:17 am

:D
  • 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: psycix » Mon Sep 21, 2009 1:00 pm

Do you guys think it needs a bumper?


Brian, I'm giving you those two sheets of rubber (both 10x10 cm), just experiment which type you will be using as gasket and possibly bumper.
I'll also give you a short leftover piece of delrin rod, the same diameter as the piston.
  • 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 Sep 21, 2009 1:15 pm

Thanks!
I got the tools to make the gasket.I don't think it needs a bumper.
  • 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: Hotwired » Mon Sep 21, 2009 1:44 pm

Cunning.

I considered a side piloting valve a while ago and seeing this, the irony is, I did draw up almost exactly a sprinkler valve but gave up because it would be too awkward to make.

Never occurred at the time that I was reinventing the wheel :lol:
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Unread postAuthor: Willdebeers » Mon Sep 21, 2009 2:57 pm

Now how the @^$% am I supposed to top that!? (Private BTB joke)
  • 0

Image
User avatar
Willdebeers
2nd Lieutenant
2nd Lieutenant
 
Posts: 214
Joined: Tue Feb 03, 2009 1:18 pm
Reputation: 0

Unread postAuthor: Brian the brain » Mon Sep 21, 2009 3:52 pm

There will be a lot more coming if it's up to me
  • 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: MrCrowley » Mon Sep 21, 2009 7:21 pm

Me thinks you should round of the edges on the machined block :)
  • 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

Unread postAuthor: psycix » Tue Sep 22, 2009 4:55 am

MrCrowley wrote:Me thinks you should round of the edges on the machined block :)

Good idea, I might do that on later projects.
I think a bit of mirror-shiny polishing would also look nice...


Now how the @^$% am I supposed to top that!?

Hold those words for my next piece of machining, this one is not perfect. This was just a warming-up. :wink:
  • 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

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'