| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-288-6929 (002886929) |
| NCB Code | USA (00) |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJF | THREAD DIRECTION | RIGHT-HAND ALL ENDS |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSR | BONNET TYPE | INSIDE SPRING |
| ADST | BONNET ATTACHMENT METHOD | THREADED |
| ADSU | DISK LOADING METHOD | SPRING |
| AEHZ | MAXIMUM OPERATING TEMP | 300.0 DEG FAHRENHEIT SINGLE RESPONSE |
| AHNC | CONNECTION STYLE | PLAIN (PIPE) ALL ENDS |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC OR MANUAL |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL PIPE ALL ENDS |
| CQCY | ADJUSTABLE PRESSURE RANGE | +45.0/+55.0 POUNDS PER SQUARE INCH |
| CQGM | MAXIMUM OPERATING PRESSURE | 250.0 POUNDS PER SQUARE INCH 1ST RESPONSE |
| CQJX | NOMINAL THREAD SIZE | 1.000 INCHES ALL ENDS |
| MATT | MATERIAL | COPPER ALLOY 836 BODY |
| MATT | MATERIAL | COPPER ALLOY 836 SEAT |
| MATT | MATERIAL | COPPER ALLOY FLOW CONTROL DEVICE |
| MATT | MATERIAL | COPPER ALLOY STEM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 11-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | GAS, INERT 2ND RESPONSE |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU |
| THSD | THREAD SERIES DESIGNATOR | NPT ALL ENDS |
| 4810-00-001-4499 (4810000014499) | 4810-00-001-4611 (4810000014611) | 4810-00-001-6321 (4810000016321) | 4810-00-001-6587 (4810000016587) |
| 4810-00-001-6588 (4810000016588) | 4810-00-001-6589 (4810000016589) | 4810-00-001-6605 (4810000016605) | 4810-00-001-6872 (4810000016872) |
| 4810-00-001-6873 (4810000016873) | 4810-00-001-7848 (4810000017848) | 4810-00-001-9471 (4810000019471) | 4810-00-001-9472 (4810000019472) |
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