| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-240-8389 (012408389) |
| NCB Code | USA (01) |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADQU | FLOW CONTROL DEVICE | DIAPHRAGM |
| AECS | BOLT HOLE QUANTITY | 4 ALL ENDS |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES ALL ENDS |
| AWLS | CONNECTION TYPE | FLANGE ALL ENDS |
| CQGM | MAXIMUM OPERATING PRESSURE | 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CSDC | OPENING PRESSURE SETTING | 60.0 POUNDS PER SQUARE INCH |
| CWCD | NOMINAL OUTSIDE DIAMETER | 3.875 INCHES 2ND END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 4.250 INCHES 1ST END |
| CWCK | NOMINAL THICKNESS | 0.500 INCHES 2ND END |
| CWCK | NOMINAL THICKNESS | 0.562 INCHES 1ST END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.625 INCHES ALL ENDS |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 2.750 INCHES 2ND END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 3.125 INCHES 1ST END |
| CWDF | FLANGE FACE DESIGN | RAISED STRAIGHT ALL ENDS |
| CWDH | RAISED FACE NOMINAL HEIGHT | 0.062 INCHES ALL ENDS |
| CWDL | RAISED FACE NOMINAL DIAMETER | 1.688 INCHES 2ND END |
| CWDL | RAISED FACE NOMINAL DIAMETER | 2.000 INCHES 1ST END |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| STYL | STYLE DESIGNATOR | ANGLE FLANGED 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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