| DISK LOADING METHOD | SPRING |
| CONNECTION TYPE | THREADED INTERNAL PIPE ALL ENDS |
| CONNECTION STYLE | GASKET SEAL (BOSS) ALL ENDS |
| FLOW CONTROL DEVICE | POPPET |
| MATERIAL | COPPER ALLOY OVERALL |
| MATERIAL | RUBBER NATURAL SEAT |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | ASSEMBLY (CHARTED)-VALVE, CHECK, FREE FLOW |
| PROPRIETARY CHARACTERISTICS | PACS |
| MAXIMUM OPERATING TEMP | 450.0 DEG FAHRENHEIT SINGLE RESPONSE |
| MAXIMUM OPERATING PRESSURE | 4500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MINIMUM OPERATING TEMP | -65.0 DEG FAHRENHEIT |
| MOUNTING FACILITY | THREADED FASTENER |
| MOUNTING POSITION | HORIZONTAL OR VERTICAL |
| NOMINAL THREAD SIZE | 0.750 INCHES ALL ENDS |
| OPENING PRESSURE SETTING | 2.0 POUNDS PER SQUARE INCH |
| SPECIAL FEATURES | O-RING AND SEAL MATERIAL IS OZONE RESISTANT NEOPRENE. ELECTRIC BOAT APPROVAL LETTER NO. 459/RDS-79-34 DATED 3/5/79; REVISION L6 APPROVAL FOR P.O. 624-D2011-K55 BY NEWPORT NEWS SHIPBUILDING LETTER 624D/K2055. ENC NUMBER BDW-322 DATED 6/21/83. OVERALL LENGTH OF VALVE IS 3-1/16 INCHES. |
| VALVE OPERATION METHOD | AUTOMATIC |
| STYLE DESIGNATOR | STRAIGHT THRU |
| THREAD CLASS | 3 ALL ENDS |
| THREAD DIRECTION | RIGHT-HAND ALL ENDS |
| THREAD QUANTITY PER INCH | 16 ALL ENDS |
| THREAD SERIES DESIGNATOR | UNF ALL ENDS |