890ETBGV2100000000

8900 SERIES MANWAY EMERGENCY RELIEF VENTS FLAT FACE FLANGE - BOLTING PATTERN TO ASME 150# SPECIFICATION; 24" SIZE; 316 SST BASE W/VACUUM FLAME SCREEN; FEP DIAPHRAGM; MODEL 8920 TOP GUIDED - SPRING LOADED DESIGN FOR PRESSURE AND VACUUM RELIEF; > 1 - 2 PSIG PRESSURE SPRING RANGE; 0.2 - 1 OZ/IN2 VACUUM SPRING RANGE;