Since you have to open and close the valve on each tank and bleed it after each fill anyway
The higher the fill pressure that modern airguns can operate at the more worthwhile this technique will become for those who own two SCBA tank but no compressor, but 300 bar capable guns like some EDGUNS, ATTAMAN and soon to be FX cant be run to their full advantage unless you have a compressor as normal SCBA cant give you 300 bar effectively.
Before I ran my first compressor I would run the first tank down to 250 bar, then use it to bulk fill from 100 bar up, then top off with a second bottle to 250, it saves trips to the place you get your cylinders filled for sure, but as above I had never seen a "cascade" attachment, infact I'm not sure how you would actually run one?
The cascade technique is a valid and useful way to extend the time between needing to refill your tanks. It is the best way to use up that "lost air" in the tank when it drops to or below 3000 psi and can't fully fill your gun's reservoir.
I was only pointing out that the tee hose "cascade assembly" seems superfluous unless you are tee-ing multiple tanks at a time.
How you actually run the assembly is by attaching each of your tanks fill whips to the Tee connector (valves closed). the whip that extends from the tee goes to your gun's fill port. So now you have two tanks connected into the tee that runs to your gun. Simply open the valve on the tank with the lowest pressure and it will fill directly into your gun.
Say your gun is now half full and the tank's pressure can no longer push more air into the gun. At this point you turn off the tank valve and bleed the system. To top off your gun you open the valve on the second tank and fill your gun to the desired pressure. Close the valve and bleed the system on the second tank.
What the cascade assembly has done is to let you fill your gun from two tanks with one connection. Without it, you would manually attach each tank to the fill port after both the partial and top off fills. Since you have to open and close the valve on each tank and bleed it after each fill anyway, how hard is it to disconnect the fill line from the gun's fill port and connect the next tank to it?
Not much advantage is derived from using the assembly.
The higher the fill pressure that modern airguns can operate at the more worthwhile this technique will become for those who own two SCBA tank but no compressor, but 300 bar capable guns like some EDGUNS, ATTAMAN and soon to be FX cant be run to their full advantage unless you have a compressor as normal SCBA cant give you 300 bar effectively.
Before I ran my first compressor I would run the first tank down to 250 bar, then use it to bulk fill from 100 bar up, then top off with a second bottle to 250, it saves trips to the place you get your cylinders filled for sure, but as above I had never seen a "cascade" attachment, infact I'm not sure how you would actually run one?
The cascade technique is a valid and useful way to extend the time between needing to refill your tanks. It is the best way to use up that "lost air" in the tank when it drops to or below 3000 psi and can't fully fill your gun's reservoir.
I was only pointing out that the tee hose "cascade assembly" seems superfluous unless you are tee-ing multiple tanks at a time.
How you actually run the assembly is by attaching each of your tanks fill whips to the Tee connector (valves closed). the whip that extends from the tee goes to your gun's fill port. So now you have two tanks connected into the tee that runs to your gun. Simply open the valve on the tank with the lowest pressure and it will fill directly into your gun.
Say your gun is now half full and the tank's pressure can no longer push more air into the gun. At this point you turn off the tank valve and bleed the system. To top off your gun you open the valve on the second tank and fill your gun to the desired pressure. Close the valve and bleed the system on the second tank.
What the cascade assembly has done is to let you fill your gun from two tanks with one connection. Without it, you would manually attach each tank to the fill port after both the partial and top off fills. Since you have to open and close the valve on each tank and bleed it after each fill anyway, how hard is it to disconnect the fill line from the gun's fill port and connect the next tank to it?
"Since you have to open and close the valve on each tank and bleed it after each fill anyway Not much advantage is derived from using the assembly."=WRONG
I don’t bleed the system after using the 1st (lower pressure tank). I fill using the lower pressure tank, close the valve, open the high pressure tank to top it off, close the valve, then bleed the system using either of the two bleeders on the tanks. You do not need to bleed the system twice, after each tank. Since I have a pressure gauge on each of my tanks and the gun, I don't need another one on the cascade connector. Just leave the gun connected and go from the first to the second high pressure tank. All you need is what was in my picture. Another benefit: You don't have to switch your fill probe from the low pressure to the high pressure tank each time you fill. I have discussed shorter hoses with Joe B before. He assured me that it sounds like a lot of air is lost each time one bleeds the system, with his micro bore hoses it is not really much.
