al-66173 gravity feeder assembly gravity feeder assembly , supply of items as per following specifications , gravity feeder assembly , chronos richardson make for weighing machines in php . gravity feeder complete with totally enclosed housing with lift off inspection doors for maintenance consisting of two position radial feed gate with movement assembly to regulate main & dribble feed rates , two pneumatic cylinders mounted with dust-proof enclosure for the operation of gravity feeder to give positive gate closure & consistent cut off . manual adjustment for initial setting . contact parts ss 316 & non contact parts ss304 . gravity feeder as per drawing .