Originally Posted by ghillemonster
i mad an asa, the tap is a 1/2 ntp fitting but you need to cut the tap down be casu the it is a tapered thread and the the widest part is at the end and the tank will not fit tward the first part of the tap
i could hook you up with a pre cut tap if you want
It is 1/2-NPS, not NPT. The tapers on an NPT tap go the full length, it is just less pronounced at the ends compared to the tip. Not saying yours doesn't work, but it isn't right.