| Item Name | Valve Check |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-843-1243 (008431243) |
| NCB Code | USA (00) |
| Manufacturer | Parker Hannifin Corporation, Crissair Inc, Boeing Company The |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A ALL ENDS |
| AEHZ | MAXIMUM OPERATING TEMP | 450.0 DEG FAHRENHEIT SINGLE RESPONSE |
| AHNC | CONNECTION STYLE | FLARED (TUBE) ALL ENDS |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| CQJX | NOMINAL THREAD SIZE | 0.438 INCHES ALL ENDS |
| CQRB | SEAT ANGLE | 37.5 DEGREES ALL ENDS |
| MATT | MATERIAL | STEEL CORROSION RESISTING STEM |
| AAJF | THREAD DIRECTION | RIGHT-HAND ALL ENDS |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL TUBE ALL ENDS |
| BBJX | MOUNTING POSITION | HORIZONTAL OR VERTICAL |
| CMLP | THREAD QUANTITY PER INCH | 20 ALL ENDS |
| CQGM | MAXIMUM OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CWFD | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES ALL ENDS |
| MATT | MATERIAL | STEEL CORROSION RESISTING BODY |
| MATT | MATERIAL | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| MEDA | MEDIA FOR WHICH DESIGNED | FUEL/OIL,HYDROCARBON SINGLE RESPONSE |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU |
| THSD | THREAD SERIES DESIGNATOR | UNF ALL ENDS |
| Components Related to NSN - 4820-00-843-1243, 4820008431243 | ||||
| 4820-00-287-3034 (4820002873034) | 4820-01-271-7886 (4820012717886) | 4820-01-714-5468 (4820017145468) | 4810-00-936-0709 (4810009360709) | |
| 4820-01-190-3734 (4820011903734) | 4820-01-482-1507 (4820014821507) | 4820-00-145-2608 (4820001452608) | 4820-01-438-4316 (4820014384316) | |
| 4820-00-035-7597 (4820000357597) | 4820-00-417-3438 (4820004173438) | 4820-01-027-8834 (4820010278834) | 4820-01-301-8497 (4820013018497) | |
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