| 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) | 01-121-8057 (011218057) |
| NCB Code | USA (01) |
| Manufacturer | Dresser Industries Inc, Komdresco Canada Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADST | BONNET ATTACHMENT METHOD | BOLTED |
| AWLS | CONNECTION TYPE | THREADED INTERNAL PIPE 1ST END |
| STYL | STYLE DESIGNATOR | ANGLE FLANGED ENDS |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES 2ND END |
| CWDL | RAISED FACE NOMINAL DIAMETER | 3.562 INCHES 2ND END |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| CWDH | RAISED FACE NOMINAL HEIGHT | 0.062 INCHES 2ND END |
| CCFG | VALVE SIZE | 2.500 INCHES |
| ADSU | DISK LOADING METHOD | SPRING |
| AEHZ | MAXIMUM OPERATING TEMP | 450.0 DEG FAHRENHEIT SINGLE RESPONSE |
| CQJX | NOMINAL THREAD SIZE | 2.500 INCHES 1ST END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 6.125 INCHES 2ND END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.750 INCHES 2ND END |
| CWCR | SECOND CONNECTION FACE TO CENTERLINE DISTANCE | 4.250 INCHES |
| MATT | MATERIAL | COPPER ALLOY SEAT |
| THSD | THREAD SERIES DESIGNATOR | NPT 1ST END |
| AGAV | END ITEM IDENTIFICATION | HEATING SYSTEM ONBOARD 270 FT WMEC CG VESSELS |
| ADQU | FLOW CONTROL DEVICE | DISK |
| ADSR | BONNET TYPE | INSIDE SPRING |
| AECS | BOLT HOLE QUANTITY | 4 2ND END |
| CQGM | MAXIMUM OPERATING PRESSURE | 30.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CWCK | NOMINAL THICKNESS | 0.812 INCHES 2ND END |
| CWCL | FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 4.000 INCHES |
| AHNC | CONNECTION STYLE | PLAIN,OPTIONAL END(PIPE) 1ST END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 4.500 INCHES 2ND END |
| CWDF | FLANGE FACE DESIGN | RAISED STRAIGHT 2ND END |
| AAJF | THREAD DIRECTION | RIGHT-HAND 1ST END |
| Relevant Components for NSN - 4820-01-121-8057, 4820011218057 | ||||
| 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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