for another slant and further links including to a video of the pump in action.
Very interesting. I looked but couldn't find an answer to the question of how the ceramic capilliary discs are affected by dirt in the fuel. If it's a case of "one blob of foreign material and it's stuffed", it may not have the ruggedness required. OTOH if the dics are cheap and you carry spares...
-- Bob Mannix (anti-spam is as easy as 1-2-3 - not)