... DF series motorized butterfly valves are widely used in the area of air-conditioning, heating, ventilating, and water treatme AE ... -DF series motorized butterfly valves are widely used in the area of air-conditioning, heating, ventilating, and water treatment for ... % 50Hz/60HzProtection Class:IP68Valve Body:Cast IronValve Sheet:SS304Ordering Code AE-DF-DN40Motorised butterfly valve;on off type;DN40AE-DF ...