help with slide/check valves?

Building or modifying BB, Airsoft, and pellet types of guns. Target practice only!
Post Reply
User avatar
jmez1996
Private 4
Private 4
Posts: 93
Joined: Tue Nov 30, 2010 7:27 am

hi again everyone.

i am trying to understand the principles around slide/check valves and how many people implement them into QEV guns as a pilot, as i am thinking about using one for my next gun
however i dont really kno much about them and will be ordering one online.
(maybe this one? http://cgi.ebay.com/New-Paintball-Gun-S ... 3f08799d74)

from what i kno already (i think) a check valve only allows air to flow through it in one direction, like a fill valve.

I dont understand how these are implemented as a pilot for qevs for semi-auto? and how they are operated?

sorry for the noobish question i have just never worked with them before.

any help would be much appreciated :)
thanks again
Top
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26219
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 581 times
Been thanked: 347 times

I explained slide valves recently here

It's basically a three way valve that governs your pilot.

"rest position" connects it to the fill line and closes it off from the atmosphere.

"fire position" closes off the fill line and opens the pilot to the atmosphere.

In practice, just connect the fill line to one end and QEV to the other.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Top
User avatar
Crna Legija
First Sergeant 2
First Sergeant 2
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia

you dont need a check valve you need a slide valve sometimes called a sleeve valve. hears a link to one.


Image

the pilot in that drawing is how a slide valve works and how you set it up with a qev
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
Top
User avatar
jmez1996
Private 4
Private 4
Posts: 93
Joined: Tue Nov 30, 2010 7:27 am

yeh that pretty much explains it, cheers.
also how does this work with semi autos? will it work fine aslong as it has a big enough supply of air going into the slide valve?
Top
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26219
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 581 times
Been thanked: 347 times

What you want is a large main chamber attached to the slide valve, and a small "firing chamber" containing just enough air for one shot - say one or two times you barrel volume - attached to the chamber side of your QEV.
hectmarr wrote:You have to make many weapons, because this field is long and short life
Top
User avatar
jmez1996
Private 4
Private 4
Posts: 93
Joined: Tue Nov 30, 2010 7:27 am

rightttttttt... thanks.
recommend any good 1/4" slide valves? a 1/8" is hard coz id have to get an adapter which i would also have to get online..
Top
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26219
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 581 times
Been thanked: 347 times

This seams reasonable value for money: http://cgi.ebay.com/Slide-shut-off-Valv ... 1c18e5e48e
hectmarr wrote:You have to make many weapons, because this field is long and short life
Top
User avatar
jhalek90
Specialist 4
Specialist 4
Posts: 498
Joined: Fri Aug 14, 2009 5:37 pm

That one is BSP threads though. Which I guess is okay, if you live in that part of the world.
jackssmirkingrevenge wrote:I wonder... if you put flammable vapours inside a lady... could you get her to diesel?
POLAND_SPUD wrote:Anything is possible with the proper 3-way valve.
Top
Post Reply

Create an account or sign in to join the discussion

You need to be a member in order to post a reply

Create an account

Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute

Register

Sign in

  • Similar Topics
    Replies
    Views
    Last post

Return to “BB, Airsoft, and Pellet Guns”