| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-883-8257 (008838257) |
| NCB Code | USA (00) |
| Manufacturer | Victor Equipment Co, Marshall Excelsior Co |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSR | BONNET TYPE | INSIDE SPRING |
| AAJF | THREAD DIRECTION | RIGHT-HAND 1ST END |
| ADST | BONNET ATTACHMENT METHOD | INTEGRAL |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END |
| CBBL | FEATURES PROVIDED | VALVE STEM LOCK SHIELD |
| CSDC | OPENING PRESSURE SETTING | 60.0 POUNDS PER SQUARE INCH |
| MATT | MATERIAL | COPPER ALLOY OVERALL |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE |
| STYL | STYLE DESIGNATOR | ANGLE |
| ADSU | DISK LOADING METHOD | SPRING |
| ADZH | RENEWABLE SEAT RING TYPE | PRESSED-IN |
| AHNC | CONNECTION STYLE | PLAIN (PIPE) 1ST END |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| CQGM | MAXIMUM OPERATING PRESSURE | 60.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CQJX | NOMINAL THREAD SIZE | 0.250 INCHES 1ST END |
| MEDA | MEDIA FOR WHICH DESIGNED | GAS,INERT 2ND RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | OXYGEN,GASEOUS 3RD RESPONSE |
| THSD | THREAD SERIES DESIGNATOR | NPT 1ST END |
| Relevant Components for NSN - 4820-00-883-8257, 4820008838257 | ||||
| 4820-01-695-0145 (4820016950145) | 4820-01-596-1771 (4820015961771) | 4810-01-187-3363 (4810011873363) | 4810-01-523-6894 (4810015236894) | |
| 4820-00-707-0356 (4820007070356) | 4820-01-568-0815 (4820015680815) | 4820-01-227-9365 (4820012279365) | 4820-01-104-8145 (4820011048145) | |
| 4820-01-299-5713 (4820012995713) | 4820-01-640-9566 (4820016409566) | 4810-01-346-0666 (4810013460666) | 4820-01-655-5932 (4820016555932) | |
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