Model "764PD" Pneumatic Differential Pressure Controller; 3-15 PSIG Output,Bronze Control Housing (PNeu Circuit),;1/4" Npt PNeumatic Connection; Standard Wetted Construction; Iron Casings, Be-Cu Diaphragm; 1-30 PSId Differential Pressure Range; Standard 1/4" Npt Process Connection,Center Of Upper Diaph Casing; 5200p Airset, 0-30 PSIG; Standard/Commercial Painting & Cleaning