MODEL "764P" PNEUMATIC PRESSURE CONTROLLER 3-15 PSIG OUTPUT,BRONZE CONTROL HOUSING (PNEU CIRCUIT), 1/4" NPT PNEUMATIC CONNECTION;; STANDARD WETTED CONSTRUCTION; DUCTILE IRON CASINGS, BE-CU DIAPHRAGM; 20 TO 100 PSIG PRESSURE RANGE; 1/4" NPT PROCESS CONNECTION @ CENTER OF UPPER DIAPH CASING;; FLUOROCARBON ELASTOMER DIAPHRAGM SEAL (OPT-75),GLYCERIN FILL,316SST HOUSING,1/2" NPT PROCESS CONNECTION; STANDARD/COMMERCIAL PAINTING & CLEANING;