Donaldson air oil separator maximizes the performance and effectiveness of any compressed air system. The air oil separator is designed to ensure the compressed air that is released passes through an air-oil separator to remove any oil mist. It is developed to efficiently remove oil mist while maintaining the lowest possible restriction. Donald air oil separators are made with state-of-the-art materials to offer the lowest possible pressure drop and longer life span. It is crucial to equip your compressor with a high quality air oil separator for peak performance.