| BOLT HOLE QUANTITY | 10 ALL ENDS |
| BOLT CIRCLE NOMINAL DIAMETER | 9.25 INCHES ALL ENDS |
| CONNECTION TYPE | FLANGE ALL ENDS |
| FLANGE SHAPE | ROUND WITH HOLES ALL ENDS |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| MATERIAL | PLASTIC SILICONE SEAT |
| MATERIAL | STEEL COMP 316 BODY |
| MATERIAL | STEEL COMP 316 FLOW CONTROL DEVICE |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | FIG 640 VENTILATION CLOSURE VALVE; |
| PROPRIETARY CHARACTERISTICS | PACS |
| MAXIMUM OPERATING PRESSURE | 30.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MEDIA FOR WHICH DESIGNED | AIR SINGLE RESPONSE |
| SPECIAL FEATURES | WATERTIGHT AND FIRE-RESISTANT; |
| STYLE DESIGNATOR | STRAIGHT THRU FLANGED ENDS |