Minimum pressure required for the bolt to vent the dump chamber?

[thei3ug]

I'm using a mag valve for something other than firing a paintball.

I am not concerned with velocity. There is no paintball, no barrel...

What is the absolute minimum pressure needed to seal the valve, and to be able to push the bolt foreward?

[Chronobreak]

600-800 psi assuming u didnt mod the valve anything les wil be FAR less reactive assuming there are no mods done to the valve u may be able to tweak some things or get abit lower input depending on your project

[jwalker87]

ive heard of someone reaching as low as 450psi, but I think it mainly depends on the gun. If you can't get it as low as you'd like, try disassembling the valve and cleaning and oiling it. That should lower the pressure a little bit. Also, do you have a lvlx? I think those take more pressure then the lvl 7, but I may be wrong.

[athomas]

A level 7 valve will shoot at field speeds (280fps) at ~350psi. The absolute lowest operating pressure will be less than that.

[thei3ug]

There is no regulator. I am not using this for paintball. There is no paintball to get a velocity with. No barrel, no trigger frame. No Advanced Integrated Regulator.

there is only the on/off. The pressure is controlled away from the valve body.

What is the minimum input pressure to the on/off to have it seal, and to have the bolt cycle so that the chamber will vent?

[athomas]

The velocity is just a result of releasing pressure behind the ball. The operation of the bolt is also dependent on the same pressure.

The regulator has no bearing on the operation of the chamber and bolt. It can be located anywhere.

The requirements of a level 7 system front chamber is slightly less than 350psi to push the bolt forward against the force of the bolt spring.

The on/off pin should be able to seal any pressure differential, even a very small one. The residual chamber pressure after the bolt has cycled is about 50psi with a paintball and less than that when dry fired. So, the on/off will always have a differential pressure of about 250 - 300psi. It won't leak.

[thei3ug]

thanks. That's exactly what I needed.

Basically what you're saying is the mag operating pressure is close to the minimum pressure needed to cycle.

Ah well, have to make something up on my own. thanks again.

[hitech]

use the level 7 bolt an just put a softer/shorter spring to get the operarting pressure down.

[jwalker87]

I think he's not using the bolt. Just the on/off assembly; how much pressure does it take to operate that.

[thei3ug]

i wouldn't use the bolt, but technically i need something to seal the dump chamber after it vents, and the rod in the middle of the bolt does that.

but hitech, i was thinking just that this afternoon when i came online and saw your post... i just have to play with different springs i guess, find something that will work at lower pressures.

now only one problem with that...
I have to electronically time the valve release. the bolt time is probably going to be way off... I hope as soon as I get an eframe that the stock board will allow me to change the on time.

[the electrician]

I don't know what you're doing, but it sounds like your using the mag, as a sort of air cylinder. thought about just using an air cylinder, and a solenoid valve to control it?

if that will not work, and you have to use the mag valve, think about this.

like he said, the spring is what is holding the bolt closed. if there was no spring, the bolt would fly forward even if there was only 30 psi in the damn thing. so you use a lighter spring and you should be able to lower the pressure accordingly. you should be able to get it down to 100 psi or lower, and then use a solenoid valve to control the cycling. probably just a good sized 3-way. use soft buna o-rings in the on/off and it will seal, probably down to 30 psi.

PM me, I can help you find some parts if you need.

[Remake101]

The minimum pressure that a classic valve in a gun is about 350 and the x and RT-valves are a little bit lower. It really depends on your set up though. I could help you get the minimum pressure down to around 250. Maybe, it depends though. It would help to know what your using it for and how.... If you explain it to me ill help you out but otherwise not. I work at my dads airsmith shop so if you dont want to explain it on the forum then you can pm me.