Voltage. 240 V. Country of Origin. Made in India. Frequency. 50 Hz. Hammer Mill Spice Pulverizer Economical Unit designed for general oil - round work for time saving operation most often, the only change necessary are of screens. Feed material passes through a wide feed hopper into the grinding chamber. Advantage. Made in India. Perfura Destoner Cum Grader Cum Aspirator is suitable for removing stones and other impurities from grains. The grains are separated based on their weight. This machine can be used for multiple grains by adjusting the air flow and the operating angle of the destoning deck. Grader is used for grading the grains based on their sizes.