Model "764P" Pneumatic Pressure Controller; 3-15 PSIG Output,Bronze Control Housing (PNeu Circuit),;1/4" Npt PNeumatic Connection; SST Wetted Construction; 316SST Upper Casing & Diaphragm, Ductile Iron;Lower Casing; 20 To 100 PSIG Pressure Range; 1/4" Npt Process Connection @ Center Of Upper Diaph Casing; Tfe Diaphragm Seal (Opt-75),Glycerin Fill,316SST Housing,1/2" Npt;Process Connection; Standard/Commercial Painting & Cleaning