MODEL "764P" PNEUMATIC PRESSURE CONTROLLER SPECIAL OUTPUT SIGNAL; 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),SILICON FILL,HASTALLOY C HOUSING,1/2" NPT PROCESS CONNECTION; PER SPQ NUMBER 57322 SPECIAL 60+ PSIG OUTPUT SIGNAL, BRONZE CONTROL HOUSING (PNEU CIRCUIT), ¼” NPT PNEUMATIC CONNECTION; STANDARD/COMMERCIAL PAINTING & CLEANING;