My Fill Whip Idea...
- The Back Pressure Regulator (BPR) I tried to mount directly onto the filter tube of my little Aerotecnica compressor (JIC connector) proved a little too heavy for the JIC joint and eventually the joint connector broke. The JIC connection is on a little 1/8 inch NPT and I think it was designed to handle the weight of a fill whip hose and no more.
- I looked at the manual for my other compressor (RIX SA3) and it positioned the BPR on the end of the fill whip with a gauge and bleed valve. So, I thought that might be a better way to include a BPR in my Aerotecnica system.
- The original Aerotecnica fill whip is nothing more than a yoke and a gauge... There isn't even a bleed valve. As the manual says, the compressor was designed to fill one tank at a time. So when you get to the desired pressure, you close the tank valve, open the drain valves, and turn off the compressor. Everything is depressurized at that point and the tank can be disconnected from the fill whip.
- The fill whip I put together above adds the benefit of the BPR for better efficiency in moisture removal and filteration, but it also serves as a one way check valve. So, the bleed valve is necessary to relieve pressure between the BPR and the tank before disconnecting.