Model "764P" Pneumatic Pressure Controller; 6-30 PSIG Output,Bronze Control Housing (PNeu Circuit),;1/4" Npt PNeumatic Connection; Standard Wetted Construction; Ductile Iron Casings, Be-Cu Diaphragm; 1 To 30 PSIG Pressure Range,Opt-55: Cleaned For Oxygen Service;Per Spec #S-1134; 1/4" Npt Process Connection @ Center Of Upper Diaph Casing; Standard/Commercial Painting & Cleaning