| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-231-2308 (002312308) |
| NCB Code | USA (00) |
| Manufacturer | Komdresco Canada Inc, Ashcroft Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADQU | FLOW CONTROL DEVICE | DISK |
| ADSR | BONNET TYPE | EXPOSED SPRING |
| ADST | BONNET ATTACHMENT METHOD | BOLTED |
| ADSU | DISK LOADING METHOD | SPRING |
| AECS | BOLT HOLE QUANTITY | 8 1ST END |
| AECS | BOLT HOLE QUANTITY | 8 2ND END |
| AEHZ | MAXIMUM OPERATING TEMP | 650.0 DEG FAHRENHEIT SINGLE RESPONSE |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC OR MANUAL |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES 1ST END |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES 2ND END |
| AWLS | CONNECTION TYPE | FLANGE 1ST END |
| AWLS | CONNECTION TYPE | FLANGE 2ND END |
| CBBL | FEATURES PROVIDED | VALVE STEM LOCK SHIELD AND BONNET PACKING |
| CCFG | VALVE SIZE | 3.000 INCHES |
| CQGM | MAXIMUM OPERATING PRESSURE | 600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CSDC | OPENING PRESSURE SETTING | 500.0 POUNDS PER SQUARE INCH |
| CWCD | NOMINAL OUTSIDE DIAMETER | 11.000 INCHES 2ND END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 8.250 INCHES 1ST END |
| CWCK | NOMINAL THICKNESS | 0.938 INCHES 2ND END |
| CWCK | NOMINAL THICKNESS | 1.250 INCHES 1ST END |
| CWCL | FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 8.688 INCHES |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.875 INCHES 1ST END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.875 INCHES 2ND END |
| CWCR | SECOND CONNECTION FACE TO CENTERLINE DISTANCE | 8.188 INCHES |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 6.625 INCHES 1ST END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 9.500 INCHES 2ND END |
| CWDF | FLANGE FACE DESIGN | RAISED STRAIGHT 1ST END |
| CWDF | FLANGE FACE DESIGN | RAISED STRAIGHT 2ND END |
| CWDH | RAISED FACE NOMINAL HEIGHT | 0.062 INCHES 2ND END |
| CWDH | RAISED FACE NOMINAL HEIGHT | 0.250 INCHES 1ST END |
| CWDL | RAISED FACE NOMINAL DIAMETER | 5.000 INCHES 1ST END |
| CWDL | RAISED FACE NOMINAL DIAMETER | 8.500 INCHES 2ND END |
| MATT | MATERIAL | NICKEL ALLOY FLOW CONTROL DEVICE |
| MATT | MATERIAL | STEEL BODY |
| MATT | MATERIAL | STEEL CORROSION RESISTING SEAT |
| MATT | MATERIAL | STEEL CORROSION RESISTING STEM |
| MEDA | MEDIA FOR WHICH DESIGNED | STEAM SINGLE RESPONSE |
| STYL | STYLE DESIGNATOR | ANGLE FLANGED ENDS |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY FLANGED CONNECTION SIZES |
| Relevant Components for NSN - 4820-00-231-2308, 4820002312308 | ||||
| 4820-01-560-5759 (4820015605759) | 4820-01-298-9351 (4820012989351) | 4820-01-545-4087 (4820015454087) | 4810-01-325-4666 (4810013254666) | |
| 4820-01-374-3466 (4820013743466) | 4810-01-453-8173 (4810014538173) | 4810-01-547-8647 (4810015478647) | 4820-01-453-6024 (4820014536024) | |
| 4820-01-510-0543 (4820015100543) | 4810-01-606-7570 (4810016067570) | 4820-01-071-1428 (4820010711428) | 4820-01-232-8464 (4820012328464) | |
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