| ADJUSTABLE PRESSURE RANGE | +20.0 TO 24.0 POUNDS PER SQUARE INCH |
| BONNET ATTACHMENT METHOD | BOLTED |
| BONNET TYPE | INSIDE SPRING |
| DISK LOADING METHOD | SPRING |
| FLOW CONTROL DEVICE | DISK |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | 1/2" RELIEF VALVE TYPE 1551-T |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| MATERIAL | BRONZE BODY |
| MATERIAL | NICKEL ALLOY SEAT |
| MATERIAL | NICKEL ALLOY STEM |
| MAXIMUM OPERATING TEMP | 150.0 FAHRENHEIT SINGLE RESPONSE |
| VALVE OPERATION METHOD | AUTOMATIC |
| STYLE DESIGNATOR | ANGLE |