Im trying out the butterfly valve, and flanged adapter, both are sturdy, and solve problems, if you want a upgrade to the vintage honey gates,similar to a ball valve ,yet different ,im trying to adapt my tanks to fir my needs ,sure NPT on everything would bee nice,instead of metric or brittish odd ball threads,im so greatful the hillco team has made life easier,all foodgrade stainless,easy to clean,ill add the bolt pattern on the honey gate flange has lined up for me , a no leak seal,,and having the option of 1.5 tri clamp,...or flanged,....I think theres a third option in NPT (national pipe thread),but id call hillco with any questions, don't forget the1.5 in clamps ,seals and any bolts to complete your plumbing, MANY manyTHANKS.