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| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-212-5259 (012125259) |
| NCB Code | USA (01) |
| Manufacturer | Eaton Aerospace Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKK | FLANGE DIAMETER | 0.419 INCHES MINIMUM AND 0.420 INCHES MAXIMUM |
| ADAR | BODY OUTSIDE DIAMETER | 0.309 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| ADAS | BODY INSIDE DIAMETER | 0.187 INCHES NOMINAL |
| AGAV | END ITEM IDENTIFICATION | CARTRIDGE VALVE,P/N 13172 |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.1315 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 0.099 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| CQKM | SEATING SURFACE SHAPE | FLAT |
| FEAT | SPECIAL FEATURES | BODY OD 0.025 X 30 DEG CHAM,0.187 IN. ID TAPERING TO 0.077-0.078 IN.BORE THRU 0.126 IN. OD BOSS 0.0300 IN. H W/16 MICHROINCH FINISH,LOWER SEAT |
| MATT | MATERIAL | STEEL COMP 17-4PH OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN FLANGED |
| ZZZV | FSC APPLICATION DATA | ACFT ENG FUEL SYSTEM COMPONENTS |
| Relevant Components for NSN - 4820-01-212-5259, 4820012125259 | ||||
| 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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