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 61 users online :: 4 registered, 0 hidden and 57 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

QEV with Inflator

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

QEV with Inflator

Unread postAuthor: HoppinS10 » Sun Nov 21, 2010 10:54 am

I was looking at some CAD drawings made by dewey-1 and noticed one of his drawings http://sketchup.google.com/3dwarehouse/details?mid=cc343d25db8b97788b92e236cf9045a7&prevstart=0 had which looks to be an air inflator hooked directly up to the pilot side of a qev. My question is does this act like a 3-way spool valve? I tried searching for this with no luck.
  • 0


HoppinS10
Private
Private
 
Posts: 17
Joined: Wed Nov 17, 2010 6:06 pm
Reputation: 0

Unread postAuthor: Gun Freak » Sun Nov 21, 2010 10:55 am

No, the blowgun/inflator is only a pilot valve.
  • 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: HoppinS10 » Sun Nov 21, 2010 10:57 am

So it only dumps the pilot area so the gun fires?
  • 0


HoppinS10
Private
Private
 
Posts: 17
Joined: Wed Nov 17, 2010 6:06 pm
Reputation: 0

Unread postAuthor: Gun Freak » Sun Nov 21, 2010 10:58 am

Yep, but some blowguns can be modified into 3 way valves, although you'd be better off just getting a proper 3-way.
  • 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: dewey-1 » Sun Nov 21, 2010 1:10 pm

Gun Freak wrote:No, the blowgun/inflator is only a pilot valve.


It can be used as inflator using the trigger handle.

Then it can be used as a pilot valve by using the pushbutton.

How these work as a tire inflator is to fill with trigger until desired pressure.
If you happen to over inflate you can use the button to release the pressure to desired pressure.

In other words it has two valves in it.
  • 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: Gun Freak » Sun Nov 21, 2010 1:15 pm

Ahh, ok cool, I didn't know.
  • 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: jackssmirkingrevenge » Sun Nov 21, 2010 4:47 pm

Have you considered fitting a spring to the QEV and adding a small equalisation hole, then feeding air through the chamber side?

Damn sight cheaper than looking around for a 3 way valve ;) Here'san example of the concept, courtesy of Brian the Brain.
  • 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

Sponsored

Sponsor
 


Unread postAuthor: HoppinS10 » Sun Nov 21, 2010 5:35 pm

Have you considered fitting a spring to the QEV and adding a small equalisation hole, then feeding air through the chamber side?

Damn sight cheaper than looking around for a 3 way valve Here's an example of the concept, courtesy of Brian the Brain.


I have considered doing this. I took the valve apart the other day and got nervous about putting a hole in the diaphram. Will this work with a QEV from mcmaster? It looks like most people are using the "european" style QEV's
  • 0


HoppinS10
Private
Private
 
Posts: 17
Joined: Wed Nov 17, 2010 6:06 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Nov 21, 2010 11:16 pm

If you're worried about modifiying the original diaphragm, you could always make your own out of suitable material ;)
  • 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

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'