| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-491-4994 (004914994) |
| NCB Code | USA (00) |
| Manufacturer | Circor Aerospace Inc, Raytheon Company |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 520T-2M-20 | circor aerospace inc | valve safety relief | 91816 | RFQ |
| 532066-2 | raytheon company | valve safety relief | 96214 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJF | THREAD DIRECTION | RIGHT-HAND 1ST END |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| AEHZ | MAXIMUM OPERATING TEMP | -100.0 DEG FAHRENHEIT 1ST RESPONSE |
| AEHZ | MAXIMUM OPERATING TEMP | 450.0 DEG FAHRENHEIT 2ND RESPONSE |
| AHNC | CONNECTION STYLE | PLAIN (PIPE) 1ST END |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END |
| CMLP | THREAD QUANTITY PER INCH | 27 1ST END |
| CQCY | ADJUSTABLE PRESSURE RANGE | 0.0 TO 200.0 POUNDS PER SQUARE INCH |
| CQGM | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CQJX | NOMINAL THREAD SIZE | 0.250 INCHES 1ST END |
| CSDC | OPENING PRESSURE SETTING | 20.0 POUNDS PER SQUARE INCH |
| MATT | MATERIAL | STEEL COMP 303 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| MEDA | MEDIA FOR WHICH DESIGNED | WATER-OIL-GAS SINGLE RESPONSE |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU |
| THSD | THREAD SERIES DESIGNATOR | NPT 1ST END |
| Components Related to NSN - 4820-00-491-4994, 4820004914994 | ||||
| 4820-01-572-7837 (4820015727837) | 4820-01-478-2496 (4820014782496) | 4810-01-232-8702 (4810012328702) | 4820-12-340-3271 (4820123403271) | |
| 4820-01-424-4726 (4820014244726) | 4820-00-428-7011 (4820004287011) | 4810-01-707-6012 (4810017076012) | 4820-01-671-9772 (4820016719772) | |
| 4820-00-034-1423 (4820000341423) | 4820-01-160-8232 (4820011608232) | 4820-00-032-4754 (4820000324754) | 4810-01-516-2099 (4810015162099) | |
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