Simple, Common Sense...
...machines are best. And that goes for parts feeders too.
You can't afford less than best.
For the best feeders; Spectrum, the common sense people.
Propane tank halves are stored, elevated, end selected and tracked, rolling at 45 pieces per minute with this storage feeder (55 cu.ft.).
Two of these machines are used to get tank tops and bottoms to an automatic assembly machine. Equipped with extra change tooling, they will feed two different tank sizes.
Spectrum's noise control works, even on parts like these.
For common sense parts feeding, your choice is Spectrum.