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Tend equipment that strain stearin from vegetable oils.

What does a Winterizer do?

Tends equipment that strains stearin from vegetable oils, such as soybean, corn, and cottonseed to produce salad oil: Turns valves to admit oil to chilling tank and to circulate refrigerant through tank coils for specified time to solidify stearin. Opens filter valves and adjusts air pressure to force oil through filters and trap suspended stearin.