Cocker valves - how exactly are the aftermaket ones more efficient?

[cledford]

How do PRO, AKA, Macdev and Madman make more efficient cocker valves? What is different about these from the "non-efficient" stock and normal versions? All of the valves look about the same - so how can Pro claim to get 1900 shots off a 45/45? How about AKA's claims?

What's the secret?

I know for the AKA valve they've got that "pointy" looking disk back by the cup seal - from what I understand from reviewing the patent it is only there to keep the valve stem aligned in the valve when it is in an open state.

-Calvin

[Snewk]

Pro Paintball arbor hones and true bores all the insides of their guns, makes sure its all smooth and purdy. By using springs, heavy hammers (the pro paintball tungsten comes to mind) and inline regulators, they can get the 33 or so psi cocking pressure that most free flows use.

Now I'm sure AKA and the rest does the same thing with thier goodies.

[AzrealDarkmoonZ]

First a little thought of my own over at air-powered.com, worth a read to better understand my platform. About a 1/3 of the way down you should see a phrase "Some Thoughts:"

Guide to Cockers



Airflow really is the key, moving as much air in as little time, that being said the new stock valves are better than some of the aftermarket valves. I prefer the use of the Red Valve, having used a 99 stock, palmerized valve, 2k stock valve and tornado.

Notice the valve stem compared to the stock valve on aftermarket valves, this allows more air through the valve in a shorter space of time, also the internal milling of the valve can also hinder air flow, you want air to expand as little as possible and not be restricted until it hits the ball. Its also important to try to match bolt size to valve outlet size, although this is generally not a problem. Some valves claim to have a bigger inlet hole but this runs into the problem of the area that the air must flow through to get to the bolt, that being the whole in the body, the merlins actually enlarge this so that they can have a larger inlet on the valve and not lose the flow. Really a turned down stem, and better internal milled valve is the best way and the way your good valves achieve greater efficiency.

Also in reference to PROs claims, I have yet to here anyone not affliated with PRO able to reach the efficiency they claimed, although recently they have changed their claims a bit, 2000+ shots on a 68/45 which is attainable if somewhat difficult. Also PRO neglected to mention when did FPS fall below acceptable range, was it 250? 200 or what?

Az

https://www.air-powered.com

[AzrealDarkmoonZ]

Thoughts?

Az

[zen_dawg]

you guys might disagree but

im using my stock valve over the RAT 3:16. im using an input of approx 250 psi and using the blue main and green valve. i get around 1200 from a 68-3K tank and shooting at about 270-280 fps.