Valves are listed as 'Fusible Link Valves' - UL842 for the US and Canada;High Quality brass construction with manual feature for use as a service valve;Straight and angle versions available for installation flexibility;Robust handwheel design, improved in 2018. 165 Degree F or 200 Degree F closing temperature, depending on model;Approved for kerosene, ASTM D396 for No1 & No2 fuel oil, ASTM D396 for B6-B20, and ASTM D975 for diesel fuel