I am working on a project that requires a small chute (Length : 240mm) to be installed between a manoeuvrable screw feeder's discharge point and a 6 inch ball valve flange inlet. Any recommendation on easy locking mechanisms b/w the ends of the chute and valve inlet flange and feeder's discharge point. I am open to any type of chute recommendations too. Important Variables : Fine powder, briquette, flakes will be loaded, avoid dust and fume, flow rate is 200kg/minute.