Profile: American Valve & Hydrant Mfg. Co. manufactures water works products. Our products include hydrants, gate valves, tapping sleeves, check valves, storz nozzle, indicator post, tapping and cutting-in valves. Our resilient seated check valve features a compact ductile iron body and bonnet. Our tapping sleeves are designed to provide a safe, efficient means of connecting branch piping to existing lines. We are accredited with ISO 9001 certification. Our brands include American Darling™ and American Flow Control™.