760 valve

[Spilled Milk]

The valve looks like 3/8" schedule 80 which according to Google has a working pressure of 950 psi. There looks like a solid 1/4 inch of metal from the valve cavity, and the coned fill port. You don't think a 3/8" brass npt nipple cold get it's way in there safely AirGunEric? My valve is not brass btw. I'm almost guessing it's aluminum.

[AirGunEric]

I think it will put too much stress on the area where the nipple would have to attach.