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; 90 TO 500 PSIG PRESSURE RANGE; 1/4" NPT PROCESS CONNECTION @ CENTER OF UPPER DIAPH CASING;; TFE DIAPHRAGM SEAL (OPT-75), SILICON FILL, 316SST HOUSING, 1/2" NPT PROCESS CONNECTION; STANDARD/COMMERCIAL PAINTING & CLEANING;