Linda
It's so hard to get comprehensive information on HEN. (I like that acronym) For example, lots of internet sites extol the "button" or flat feeding tubes made by Bard or Mic-key, yet the anti leak valve in the buttons is only 12 FR. Likewise almost all extender tubes are only 12 FR. I finally got a 16 FR G tube which handles the Vitamix food pretty good even with the narrow 12 FR extender and since it's larger than the extender tube, it does not clog very often. I am learning piece meal by cross examining each doctor that puts in a new feeding tube for me. So far I am on my 4th g-tube since March 2009 and next one scheduled for end of August, beginning of September.
Charm