SpudFiles

Hey guys any one got any ideas on a high pressure valve for my new 800 psi rifle

a Hammer valve.

Ball valve, butterfly valve, burst disk, piston valve, etc.
I would suggest the burst disk as it is full flow and opens pretty much instantly, which gives great performance.
Take a look in the wiki for how to make a triggered burst disk.

BTW, how are you pumping to 800 psi??? I would recommend just building a hybrid to achieve the pressures you're trying to get

doomburger wrote:BTW, how are you pumping to 800 psi??? I would recommend just building a hybrid to achieve the pressures you're trying to get

Thats nothing! why would you need a hybrid, i can achive those pressures in a matter of seconds.

Goats spudz wrote:why would you need a hybrid, i can achive those pressures in a matter of seconds.

But it's not you who we're talking about, it's the OP get 800PSI? I assume you're getting it from a HPA source like a large CO2/Nitrogen/Helium/SCUBA tank; which are pretty expensive. Hybrids can also be more portable since you only need a small track pump and a little bottle of fuel.

On the other hand, if the OP wants a semi-realistically looking "rifle" to plink with, a pneumatic would be better than a hybrid. I only say that because it's a lot easier to increase the RPM in a pneumatic than a hybrid and if you want raw power, you're not going to waste money on making the cannon look like a rifle.

Fridge compressor.

get a QEV of ebay they aren't rated for 800 but will take it quite well and if anything was to break it would be the rubber piston.

Yeah I tried to make one but had no luck their its on air so ill give it ago

Does any one know what sort of fittings I should use for that kinda pressure ( to fill up the cylinder on my gun)

I would say steel pipes and fittings. Stainless steel or galvanized steel. They take a lot of pressure, but can be pretty expensive. You can buy them from mcmaster.com

Edit: Also, please don't double post. You can edit your last post to put in any more information.

ozzioutlaw wrote:Does any one know what sort of fittings I should use for that kinda pressure ( to fill up the cylinder on my gun)

Get fittings from a hydraulics shop....don't mess around.

x2 on hammer valve. Even if you build a "piston" valve as the main valve, finding an affordable pilot valve with a suitable rating will be impossible...and you'll end up using a hammer valve for that anyway.

Cool thanks for ya help guys ill be uploading images in a few day asoon as I go online and order everything