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; 1 TO 30 PSIG PRESSURE RANGE; 1/4" NPT PROCESS CONNECTION @ CENTER OF UPPER DIAPH CASING;; TFE DIAPHRAGM SEAL (OPT-75),GLYCERIN FILL,HASTALLOY C HOUSING,1/2" NPT PROCESS CONNECTION; STANDARD/COMMERCIAL PAINTING & CLEANING;