Here are a couple more photos of some of the custom tools we use. If you've ever tried to remove a regulator from a tank, you know what a pain it can be. Fortunately, we have a pneumatic vise made just for the purpose of holding onto the tank.
The valve on the left side of the vise supplies air to the piston, which in turn raises or lowers the vice jaw. The jaws are padded with inch thick pads of rubber, so there's no risk of scratching the tank. The vise is driven by our shop compressor.
Once the tank is locked down in the vise, we use custom tooling to remove or install the regulators. In this picture you can see how we install regs.
The ASTM standard for paintball regulators states that a regulator must be installed so that it takes 18 ft lbs of torque to remove it. By using a torque wrench, we ensure the regulator is properly tightened.