High Plansifter

A plansifter separates ground stock into fractions by size, and its output is decided by sieve area, stack height and the way the frames are clamped. Two sifters with the same footprint can differ in capacity once stack height and sieve mesh are taken into account. The practical questions are how many sections the machine has, what mesh each section carries, and whether the frames stay square after years of use, because a slack frame tears cloth and changes the grading without any visible fault.