42A46CA64S0N-57445

4200 SERIES SPRING LOADED PRESSURE/VACUUM VENT W/ PIPE AWAY ASME 150 FLANGE CONNECTION; 4" INLET AND 4" OUTLET; 316 SST BODY, 316 SST BOLT-IN SEAT RING; FEP-TFE PALLET DIAPHRAGM; SPRING LOADED; >1.25 PSIG PRESSURE SET POINT; WEIGHT LOADED; 2.00 AND ABOVE OZ/IN2 VACUUM SET POINT; WEIGHT MATERIAL ALL SST; WITH BUG SCREEN; OPT-40: CONSTRUCTION PER NACE STANDARD MR0175; PER SPQ NUMBER 57445 WITH SPECIAL INCONEL X750 SPRING ON PRESSURE SIDE.