RTi 1P-250-M08-DC Eliminex® 1 Inch (in) Port Size Automatic Drain High Flow Aluminum Bowl Combo High Flow SeparatorTwo (2) stage assembly which combines an Eliminex separator filter with a high efficiency coalescer to give superior oil and fine particulate capture, in addition to heavy water removal. 99. 99998 % efficient at 0. 01 micron. ISO Class 1 for Particulate Oil. Specifications Brands Eliminex Port Size 1 in Thread Styles British Standard Parallel Pipe (BSPP), British Standard Pipe Thread (BSPT), National Pipe Thread (NPT) Flow Capacity at 100 Pound per