Hello Rosco! Thanks for clarifying (Diaphragm pump). Couldn't find anything on Google, was also wondering what the original app. may have been!? And if that is a bona fide 50khr MTBF ...
(could use something like that for my "geothermal" AC - need at least 1bar, and 3lpm is just about enough for a 22°c setpoint
)
/off topic