25 GPM 10 micron (nominal) 1 inch flow 1.5 inch û 16 UNF Mounting Thread Maximum operating pressure 50 PSID Part number: 40510W-AD-12 PetroClear 40510W-AD filters are particulate removing and water sensing spin-on filters designed to remove particulate and to sense both free and emulsified water from neat gasoline, diesel, Biodiesel, ULSD (Ultra Low Sulfur Diesel), kerosene and fuel oils. These filters are designed to sense water, both free and emulsified, and slow flow as an indicator of the presence of water in neat gasoline and diesel fuels. This filter will not sense nor react to water in Ethanol blended gasoline. (Reaction known as phase separation). Collapse Pressure: 150 psi. Diameter: 3.75 inches. Type: spin-on filters. Pack of 12 filters.