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3 way valve with spheroidal cast iron body and stailess steel internal parts. PN25 flanged 3FSA.S valves are used to control fl uids belonging to the group 1 (water, overheated water, steam, diathermic oil) in accordance to article 9 of 97/23/CE (PED) directive, in air-conditioning,  thermoventilation and heating plants and in industrial processes; therefore, they cannotbe used as safety valves. They consist in a 3-way valve body to be assembled on electricalbidirectional actuator. They can be motorized with Controlli MVH, MVHA/C and MVE series actuators.