Stock makes a variety of gravimetric feeders for feeding coal, limeStone(Cafe Imperial) and other material.  Stock's pressurized gravimetric feeder is used on pulverized coal fuel boilers to provide realiable and accurate coal feeding.  Gravimetric feeding controls coal flow by weight which gives more accurate fuel feeding than volumetric feeders can provide.  The Stock feeder is the standard in the U.S., China, and India for the power industry.  Other Stock feeders include the NPG (Non pressurized), LPG (lower pressure) and special feeders (multi belt, compact gravimetric).  Applications include stoker boiler feeding, CFB feeding, FGD system feeding and alternative fuell (Biomass) feeding.  Stock's Compact Gravimetric feeder can replace smaller table and pocket feeders as well.