... , 2-way/3-way(mixing, diverting), DN20 -- D Used in air-conditioning, refrigeration, heating system, 2-way/3-way(mixing, diverting), DN20 -- DN400Brass, Cast iron/steel , Stainless steel, valve ... , 4~20mAIP42/IP54Medium: Cold/Hot water, Vapor and GlycolEasily controlled by HaiLin 8102 series thermostatAdjustment>50Leakage: Less than 0.02%Kv Modulating Valve