Foster Fitting Inflation Needle

I would definitely opt for filling with a low-pressure pump. Our guns fill to 200+ bar. The bottle-blasters max pressure of 100psi = 6.8 bar. Our high-pressure gauges simply do not have the low-pressure precision needed to ensure accurate filling.

I fill the bottles with my 4500 psi air tank that i have a regulater for that can go from 0 to 750, beats pumping them up.

Bob, I fill mine with a small shop compressor. It would make me very nervous to fill those bottle targets with my 4500 psi SCBA tank? You would have to have a very good regulator so as to make sure the output is regulated to 100 psi or less.

I have the regulator on my shop compressor set at 90 psi and have had great results at that pressure. I used gloves in the beginning, but after many many bottles, I've gotten brave enough to fill them without gloves.
I can feel the bottle heat up as it fills and I stop filling around 70 or 80 psi, let the bottle cool off and then top it off to 90 psi after it has cooled. That is why it would make me nervous filling from a 4500 psi tank. It would fill the bottle target extremely fast, maybe too fast? And those things really heat up as you fill them!

Here I am filling a small 16 oz target bottle to 90 psi with my little shop compressor with gloves when I first started.


Hope this helps