dutch are you sure it shouldn’t say bye? hey do you have a link to what you’re talking about? Norris tanks are DIN only valve. To use a DIN to YOKE adapter for a 3500 CF I hear isn’t the best thing to use for diving, but maybe filling is ok with it. Anyway thanks for the advise , but I’m looking for a Old rusty junk DIN First stage because I want to use the tank.OR trade it for another 100CF steel tank (rusty, bent, hammered whatever, as long as it’s been recently HYDRO’d. This Norris is like new.