| DISK LOADING METHOD | SPRING |
| CONNECTION TYPE | THREADED EXTERNAL PIPE ALL ENDS |
| CONNECTION STYLE | PLAIN (PIPE) ALL ENDS |
| FLOW CONTROL DEVICE | DISK |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-B148 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| MATERIAL | COPPER ALLOY BODY |
| MATERIAL | NICKEL ALLOY SEAT |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | CHECK VALVE |
| PROPRIETARY CHARACTERISTICS | PACS |
| MAXIMUM OPERATING PRESSURE | 6000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| NOMINAL THREAD SIZE | 1.375 INCHES ALL ENDS |
| SPECIAL FEATURES | VALVE DESIGN CONSISTENT W/MIL-V-24109A & ASTM-F1794-97 |
| VALVE OPERATION METHOD | AUTOMATIC |
| STYLE DESIGNATOR | STRAIGHT THRU |
| THREAD SERIES DESIGNATOR | NPT ALL ENDS |