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| Item Name | Valve Check |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-450-1985 (004501985) |
| NCB Code | USA (00) |
| Manufacturer | Circor Aerospace Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| BBJX | Mounting Position | HORIZONTAL OR VERTICAL |
| CQRB | Seat Angle | 37.0 DEGREES 1ST END |
| AAJF | Thread Direction | RIGHT-HAND ALL ENDS |
| AWLS | Connection Type | THREADED INTERNAL BOSS 2ND END |
| AAJD | Thread Class | 3A 1ST END |
| AAJD | Thread Class | 3B 2ND END |
| STYL | Style Designator | STRAIGHT THRU |
| AQLR | Valve Operation Method | AUTOMATIC |
| THSD | Thread Series Designator | UNF ALL ENDS |
| ADSU | Disk Loading Method | SPRING |
| MATT | Material | ALUMINUM ALLOY 2024 BODY |
| CWFD | Nominal Outside Diameter Tube Accommodated | 0.375 INCHES 1ST END |
| STDC | Surface Treatment Document And Classification | MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| AHNC | Connection Style | FLARED (TUBE) 1ST END |
| SFTT | Surface Treatment | ANODIZE |
| CQJX | Nominal Thread Size | 0.562 INCHES ALL ENDS |
| AHNC | Connection Style | GASKET SEAL (BOSS) 2ND END |
| AWLS | Connection Type | THREADED EXTERNAL TUBE 1ST END |
| MATT | Material | ALUMINUM ALLOY 2024 SEAT |
| MRC | Decoded Requirement | Clear Text Reply |
| Relevant Components for NSN - 4820-00-450-1985, 4820004501985 | ||||
| 4810-01-693-0546 (4810016930546) | 4810-01-224-8636 (4810012248636) | 4810-00-181-8826 (4810001818826) | 4810-00-533-2538 (4810005332538) | |
| 4820-01-319-3454 (4820013193454) | 4820-01-154-9733 (4820011549733) | 4810-01-176-9496 (4810011769496) | 4820-01-278-5449 (4820012785449) | |
| 4810-01-152-7681 (4810011527681) | 4810-00-127-2787 (4810001272787) | 4820-00-557-7800 (4820005577800) | 4810-01-469-1460 (4810014691460) | |
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