3200 SERIES PRESSURE/VACUUM VENT WITH PIPE AWAY 2" INLET SIZE; 2" OUTLET SIZE, MATES WITH STANDARD ASME 150# FLANGED CONNECTIONS; RAISED FACE CARBON STEEL BODY & COVER, SST TRIM; FEP-TFE PALLET DIAPHRAGM; STANDARD WEIGHT MATERIAL STEEL OR COMBINATION OF STEEL AND SST; OPT-40: CONSTRUCTION PER NACE STANDARD MR0175;