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| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-203-7911 (002037911) |
| NCB Code | USA (00) |
| Manufacturer | Military Specifications, Kunkle Industries Inc, Dresser Industries Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADQU | FLOW CONTROL DEVICE | DISK |
| ADSR | BONNET TYPE | EXPOSED SPRING |
| ADST | BONNET ATTACHMENT METHOD | THREADED |
| ADSU | DISK LOADING METHOD | SPRING |
| AECS | BOLT HOLE QUANTITY | 8 ALL ENDS |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC OR MANUAL |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES ALL ENDS |
| AWLS | CONNECTION TYPE | FLANGE ALL ENDS |
| CBBL | FEATURES PROVIDED | VALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE |
| CCFG | VALVE SIZE | 3.000 INCHES |
| CQCY | ADJUSTABLE PRESSURE RANGE | 5.0/10.0 POUNDS PER SQUARE INCH |
| CWCD | NOMINAL OUTSIDE DIAMETER | 6.625 INCHES ALL ENDS |
| CWCK | NOMINAL THICKNESS | 0.562 INCHES ALL ENDS |
| CWCL | FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 5.500 INCHES |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.562 INCHES ALL ENDS |
| CWCR | SECOND CONNECTION FACE TO CENTERLINE DISTANCE | 6.250 INCHES |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 5.500 INCHES ALL ENDS |
| CWDF | FLANGE FACE DESIGN | PLAIN ALL ENDS |
| MATT | MATERIAL | ALUMINUM ALLOY STEM |
| MATT | MATERIAL | COPPER ALLOY BODY |
| MATT | MATERIAL | COPPER ALLOY FLOW CONTROL DEVICE |
| MATT | MATERIAL | COPPER ALLOY SEAT |
| MEDA | MEDIA FOR WHICH DESIGNED | WATER,FRESH SINGLE RESPONSE |
| STYL | STYLE DESIGNATOR | ANGLE FLANGED ENDS |
| TMQY | FURNISHED ITEMS AND QUANTITY | 1 LEVER |
| ZZZK | SPECIFICATION/STANDARD DATA | 81349-MIL-V-24332 GOVERNMENT SPECIFICATION |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | A GRADE OR B GRADE |
| Relevant Components for NSN - 4820-00-203-7911, 4820002037911 | ||||
| 4810-01-693-0546 (4810016930546) | 4810-01-224-8636 (4810012248636) | 4810-00-181-8826 (4810001818826) | 4810-00-533-2538 (4810005332538) | |
| 4820-01-319-3454 (4820013193454) | 4820-01-154-9733 (4820011549733) | 4810-01-176-9496 (4810011769496) | 4820-01-278-5449 (4820012785449) | |
| 4810-01-152-7681 (4810011527681) | 4810-00-127-2787 (4810001272787) | 4820-00-557-7800 (4820005577800) | 4810-01-469-1460 (4810014691460) | |
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