MC2-8S17-1X000000C-347 MODEL 4381 REV C CRYOGENIC PRESSURE REDUCING REGULATOR; 1/4” LINE SIZE; SPECIAL 316L STAINLESS STEEL BODY WITH BRASS SPRING CHAMBER; S1 TRIM: 316L STAINLESS STEEL METAL SEAT, 302 STAINLESS STEEL DIAPHRAGM; NPT END CONNECTIONS; SPECIAL 190- 300 PSIG RANGE SPRING (INCLUDES OPT-80 HIGH OUTLET PRESSURE CONSTRUCTION)