SCBA fill adapter

I'm finally getting a compressor so I don't have to hand pump my guns anymore. I'm looking at getting a SCBA tank and I cannot find an adaptor to actually fill the tank from my compressor. I've found dozens of fill stations that will fill my guns from the SCBA tank, but I can't find an adapter to fill the tank from my compressor. Does anyone know where I can get that adapter?
 
While I am BRAND NEW to using a compressor...here is what my buddy Mike and I came up with .



https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F232941456358



We are just filling the tanks from the compressor thru the whips. Works like a charm

That's a 8mm which is not used in most applications in the US. You need this type, but you need it in a different size, 1/8 inch NPT. They also sell them at PA but they cost about $16 plus $8 shipping.

https://tinyurl.com/yd25bzrf
 
1543035299_18647323165bf8d9a372d1d6.09529532_DIY SCBA Fill adapter n cascade.jpg


The Foster male between the SCBA 'handtight' fitting at the top and the gauge is a check valve inlet for cascade filling.

The Foster male between the bleed valve (at bottom, clockwise from the gauge) and the brass 'extra port' plug is the OUT to the gun or in reverse is the IN to the bottle.

The manifold block is 4140 steel and the intersecting cross passages leaving the bottom of each NPT hole is 1/8" to act as a flow restriction "just in case" of a hose blowout.

I made this over a decade ago as an original idea, so NO it is not a copy of anyone else!