Boiler vacuum KV-4.6M, KVM-4.6, Zh4-FPA Vacuum boiler serves for cooking, sterilization and dehydration of non-edible protein raw materials and confiscations obtained during the processing of livestock, poultry and meat at meat industry enterprises during the production of dry animal feed (meat, meat and bone, blood, bone meal, hydrolyzed feather meal)feather, fodder protein concentrate: horned meal), for processing carcasses of fallen animals into fodder products at meat-and-bone meal plants, production of fodder and technical fats, as well as for obtaining rendered animal fats from fat. raw meat, bones and bone remains. The vacuum boiler is part of the technological lines for the production of dry animal fodder and animal fats and can work according to technological schemes. The vacuum boiler ensures the production of dry animal fodder: meat and bone, meat, blood, bone meal and hydrolyzed feather meal, feed animal fat and technical animal fat.