I am trying to find which blowdown adapter fitting will work with my NOS bottle valve. It is the "Hi-FLo" bottle valve. The thread boss on the bottle valve is female. The fitting looks to be identical to this Dynotune safety fitting, but the dynotune description says it specifically does not fit "Nos" brand bottles. Do you guys know if this fitting will actually work, i believe i have the 2nd gen NOS bottle valve. Thanks for any input.
Here is a pic of the dynotune fitting that looks to be the same as the safety cap on my bottle.


UPDATE: THE DYNOTUNE FITTING DEFINITELY FITS NOS BOTTLE VALVE, FYI

 

-8 I think is what I used, shifted from the tube to a braided hose.

 

You're right. The fitting that the blowdown tube/line attaches to is -8 AN. The part thats confusing me is the fitting on the other side that the burst disc goes over and then threads into the bottle. It seems like that dynotune fitting would fit the NOS bottle but they say it won't.

 

opps wrong end sorry, I know the gauge port is a 1/8npt. Not sure on the blow down.

 

you need the older style blowdown adapter, the one pictured above is the newer style most new bottles use.....i happen to have one if your interested

 

the safety cap that came on my bottle looks identical to that dynotune fitting, so i ordered the dynotune fitting, hopefully they are the same. My bottle valve has the date 11/2000 indented. Thanks for your help guys, if the dynotune fitting doesn't work, i'll get a hold of you about your fitting.