| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-049-5750 (010495750) |
| NCB Code | USA (01) |
| Manufacturer | Coltec Industries Inc, Fairbanks Morse Llc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADQU | FLOW CONTROL DEVICE | PISTON |
| ADSR | BONNET TYPE | INSIDE SPRING |
| ADST | BONNET ATTACHMENT METHOD | INTEGRAL |
| ADSU | DISK LOADING METHOD | SPRING |
| AECS | BOLT HOLE QUANTITY | 8 ALL ENDS |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES ALL ENDS |
| AWLS | CONNECTION TYPE | FLANGE ALL ENDS |
| CCFG | VALVE SIZE | 4.000 INCHES |
| CSDC | OPENING PRESSURE SETTING | 20.0 POUNDS PER SQUARE INCH |
| CWCD | NOMINAL OUTSIDE DIAMETER | 7.688 INCHES ALL ENDS |
| CWCK | NOMINAL THICKNESS | 0.688 INCHES ALL ENDS |
| CWCL | FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 5.880 INCHES |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.562 INCHES ALL ENDS |
| CWCR | SECOND CONNECTION FACE TO CENTERLINE DISTANCE | 5.880 INCHES |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 6.562 INCHES ALL ENDS |
| CWDF | FLANGE FACE DESIGN | PLAIN ALL ENDS |
| MATT | MATERIAL | STEEL OVERALL |
| STYL | STYLE DESIGNATOR | ANGLE FLANGED ENDS |
| Components Related to NSN - 4820-01-049-5750, 4820010495750 | ||||
| 4820-01-373-8958 (4820013738958) | 4820-01-129-8013 (4820011298013) | 4820-01-440-6910 (4820014406910) | 4810-01-523-9395 (4810015239395) | |
| 4810-01-541-8177 (4810015418177) | 4810-01-480-3370 (4810014803370) | 4820-01-190-5941 (4820011905941) | 4820-01-130-0014 (4820011300014) | |
| 4820-01-365-6951 (4820013656951) | 4820-01-414-5558 (4820014145558) | 4820-01-319-9150 (4820013199150) | 4820-00-488-8376 (4820004888376) | |
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