Model "521" Globe-Style,Total Tfe Control Valve; 1/2" Size, 304 SST Shell, Tfe Straight Body; 150 # Rf Flanges, Tfe Bellows & Packing, Integral Seat, Tfe Plug,;Opt - "D" Hastelloy C-276 Stem, Anti-Rotation Stop & Pin; .16 Cv Reduced Trim - .250" Orifice; Equal % Inherent Characteristic; Model C27 Actuator, Reverse Action, Ato-Fc, 5-15 PSIG Bench Set; No Positioner; No Handwheel Assembly; Standard Commercial Cleaning & Painting