| Item Name | Valve Check |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-856-4509 (008564509) |
| NCB Code | USA (00) |
| Manufacturer | American Safety Flight Systems Inc, Essex Industries Inc, Conax Florida Corporation, Air Force United States Department |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A 1ST END |
| AAJF | THREAD DIRECTION | RIGHT-HAND 1ST END |
| ADQU | FLOW CONTROL DEVICE | BALL |
| ADSU | DISK LOADING METHOD | SPRING |
| CQGM | MAXIMUM OPERATING PRESSURE | 1800.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CWFD | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.312 INCHES 1ST END |
| MATT | MATERIAL | ALUMINUM ALLOY BODY |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR SINGLE RESPONSE |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END |
| MATT | MATERIAL | ALUMINUM ALLOY SEAT |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU |
| Relevant Components for NSN - 4820-00-856-4509, 4820008564509 | ||||
| 4820-00-405-2314 (4820004052314) | 4820-01-644-7717 (4820016447717) | 4820-00-138-5801 (4820001385801) | 4820-01-478-3615 (4820014783615) | |
| 4810-01-231-9665 (4810012319665) | 4810-01-463-1795 (4810014631795) | 4820-01-270-4213 (4820012704213) | 4820-01-482-5390 (4820014825390) | |
| 4810-01-574-6488 (4810015746488) | 4820-01-375-3688 (4820013753688) | 4810-01-486-6370 (4810014866370) | 4820-01-562-8058 (4820015628058) | |
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