After filter is used as suitable line filter for refrigerant air dryer. Widely used as integral part of HEPA filter, this product is equipped with differential pressure gauge, leak proof and oil protected O ring and anti rust end cap. Housing of this product is made of durable ABS or aluminum alloy. Inside and outside of its structure have antioxidant treated surface to avoid corrosion formation. Offered after filter is also equipped with automatic draining arrangement with manual adjustment facility.