| BONNET ATTACHMENT METHOD | BOLTED |
| BONNET TYPE | INSIDE SPRING |
| CONNECTION TYPE | FLANGE ALL ENDS |
| DISK LOADING METHOD | SPRING |
| FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 4.000 INCHES |
| FLOW CONTROL DEVICE | DISK |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | 1-1/2" RELIEF VALVE, TYPE UU 1571-T |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-288 COMP A ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| MATERIAL | COPPER ALLOY 922 BODY |
| MATERIAL | NICKEL ALLOY FLOW CONTROL DEVICE |
| MATERIAL | NICKEL ALLOY SEAT |
| MATERIAL | NICKEL ALLOY STEM |
| MAXIMUM OPERATING PRESSURE | 125.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MAXIMUM OPERATING TEMP | 165.0 FAHRENHEIT SINGLE RESPONSE |
| MEDIA FOR WHICH DESIGNED | AIR SINGLE RESPONSE |
| OPENING PRESSURE SETTING | 110.0 POUNDS PER SQUARE INCH |
| SECOND CONNECTION FACE TO CENTERLINE DISTANCE | 4.250 INCHES |
| SPECIAL FEATURES | PRESSURE RANGE IS 109 TO 125 PSIG |
| STYLE DESIGNATOR | ANGLE FLANGED ENDS |
| VALVE OPERATION METHOD | AUTOMATIC |
| VALVE SIZE | 1.500 INCHES |