Zone Valve, 120Vac, 1/2" Sweat, Normally Open, Spring Return to Open, 3.5Cv, 20 Psi Maximum Closeoff Pressure, No Manual Opener, 18" Electrical Leads, 40-200 Degree Fluid Temperature Range, Brass Body, Stainless Steel Stem, Brass Seat, EPDM Rubber Packing O-Ring, Buna-N Rubber Ball Ball Plug