| ADJUSTABLE PRESSURE RANGE | +60.0 TO 73.0 POUNDS PER SQUARE INCH |
| BONNET ATTACHMENT METHOD | BOLTED |
| BONNET TYPE | INSIDE SPRING |
| CONNECTION TYPE | UNTHREADED INTERNAL PIPE ALL ENDS |
| CONNECTION STYLE | SOCKET ALL ENDS |
| CRITICALITY CODE JUSTIFICATION | ZZZY |
| DISK LOADING METHOD | SPRING |
| FURNISHED ITEMS AND QUANTITY | 2 NUT AND 2 TAILPIECE |
| FLOW CONTROL DEVICE | DISK |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | 1/2 IN. RELIEF VALVE TYPE 2571-T |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A351 GR. CF8M ASSN STD SINGLE MATERIAL RESPONSE BODY |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 TY. 303 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 TY. 303 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| MATERIAL | NICKEL ALLOY FLOW CONTROL DEVICE |
| MATERIAL | STEEL BODY |
| MATERIAL | STEEL SEAT |
| MATERIAL | STEEL STEM |
| MAXIMUM OPERATING TEMP | 125.0 FAHRENHEIT SINGLE RESPONSE |
| MAXIMUM OPERATING PRESSURE | 400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MEDIA FOR WHICH DESIGNED | NITROGEN, LIQUID SINGLE RESPONSE |
| NOMINAL PIPE SIZE ACCOMMODATED | 0.500 INCHES ALL ENDS |
| OPENING PRESSURE SETTING | 60.0 POUNDS PER SQUARE INCH |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| RENEWABLE SEAT RING TYPE | THREADED |
| SPECIFICATION/STANDARD DATA | 81349-MIL-V-22549 (1), DTD 13 APR 77, MODIFIED GOVERNMENT SPECIFICATION |
| STYLE DESIGNATOR | ANGLE |
| VALVE DISCHARGE FLOW RATE | 16.0 CUBIC FEET PER MINUTE |
| VALVE OPERATION METHOD | AUTOMATIC |