Paintball Grenade Filling Device

Well it's really not all that complex. It works off of an air compressor. It cannot be used with Co2 as the maximum pressure is 200psi. It's a 1' section of 4" PVC. The bottom is a standard end cap. The top is the screw off type. I could not get the top to seal properly so I glued it on and threaded in a 1" close galvanized pipe and use a galvanized cap to close it off. This is where you fill it. The fitting sticking out on the right is where the compressor line goes into the filler. Notice I drilled where the PVC is 2 layers thick. It is also tapped and threaded to 1/4" MPT. The end cap at the bottom was also drilled and threaded to 1/4" MPT and a brass fitting was threaded in. A piece of re-inforced clear hose (200 PSI) attached to the fitting and to make sure it stays I added a hose clamp. The line runs to the same fitting threaded into the blow-gun and is also clamped in place. On the "out" end of the blow gun there is another brass hose fitting (1/8" MPT) which you slide the grenade tubing on to fill it. It works like a charm. This unit holds approximately 3/4 gallon of paint and was built specifically for someone.

My new one is the same design but uses a 2' piece of the 4" PVC and holds 1.5 gallons. I also used a 4" to 2" PVC reducer at the top that was threaded for a 2" cap. Works a lot better than the model shown. I also added a shut-off valve (small ball valve) where the air compressor hooks in so I can pressurize it, close the valve and actually unplug the compressor and fill grenades elsewhere for a while.