| Item Name | Valve Safety Relief |
| INC Code | 05488 |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-893-2107 (008932107) |
| NCB Code | USA (00) |
| Manufacturer | Atwood And Morrill Co Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| AECS | BOLT HOLE QUANTITY | 4 1ST END |
| AECS | BOLT HOLE QUANTITY | 4 2ND END |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| 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 |
| CRTL | CRITICALITY CODE JUSTIFICATION | ZZZY |
| CSDC | OPENING PRESSURE SETTING | 850.0 POUNDS PER SQUARE INCH |
| CWCD | NOMINAL OUTSIDE DIAMETER | 3.750 INCHES 1ST END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 4.875 INCHES 2ND END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.625 INCHES 1ST END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.750 INCHES 2ND END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 2.625 INCHES 1ST END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 3.500 INCHES 2ND END |
| CWDF | FLANGE FACE DESIGN | RAISED STRAIGHT 1ST END |
| CWDF | FLANGE FACE DESIGN | RAISED STRAIGHT 2ND END |
| MATT | MATERIAL | COBALT ALLOY BODY LINING |
| MATT | MATERIAL | NICKEL ALLOY BODY |
| MATT | MATERIAL | NICKEL ALLOY FLOW CONTROL DEVICE |
| STYL | STYLE DESIGNATOR | ANGLE |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | SELECTED AND TESTED FOR NUCLEAR PROPULSION PLANT SYSTEMS |
| Relevant Components for NSN - 4820-00-893-2107, 4820008932107 | ||||
| 4820-00-835-3873 (4820008353873) | 4820-01-431-2398 (4820014312398) | 4820-01-009-8942 (4820010098942) | 4820-01-273-3653 (4820012733653) | |
| 4820-01-274-9975 (4820012749975) | 4820-01-600-7663 (4820016007663) | 4820-01-338-4276 (4820013384276) | 4820-01-233-6683 (4820012336683) | |
| 4820-01-018-1584 (4820010181584) | 4820-01-322-8071 (4820013228071) | 4820-01-318-2830 (4820013182830) | 4820-01-340-5738 (4820013405738) | |
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