No I don't think so. It says on the tank. The tank itself is steel. The bladder inside is bad.

I don't know much about sprinkler valves. Any suggestions of valves that work have worked well for you?

You now those tanks that are in a water system. They have a rubber bladder inside them charged with air. Then water is pumped around the bag and the bag provides water system pressure. I have gotten a hold of one of those and the bag is busted. It is rated for 150psi and I was wondering if it would ...

I'm using a ball valve. This is my second air gun. I'm still learning. I'm building it out of sch 80 PVC.

Basic design is pretty simple. Chamber, ball valve, barrel. I'll post a pic when I finish.

Send me an CO2 powered air gun and the cartridges and I'd have an empty one for you in about 3 hours.

Maybe I should mount one of these on my bike... the possibilities

In terms of power, for the same pressure in the barrel, the 0.60 cal theoretically has 144% of the power available to the 0.50 cal, but to achieve this... I like that!(144% more power) Nearly twice as much power! :D ...you will need a proportionally larger valve and chamber, so more gas consumption...

Okay, here's the scoop. I'm building a single shot air rifle. I want it to have a big bore, and therein lies the problem. I don't know what caliber to make it. Should it be a .60 cal or a .50 cal? What do you like better?