AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-049-5843 (010495843) |
| NCB Code | USA (01) |
| Manufacturer | Eaton Aerospace Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKK | FLANGE DIAMETER | 0.7490 INCHES MINIMUM AND 0.7495 INCHES MAXIMUM |
| ADAR | BODY OUTSIDE DIAMETER | 0.635 INCHES MINIMUM AND 0.638 INCHES MAXIMUM |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.135 INCHES MINIMUM AND 0.139 INCHES MAXIMUM |
| AJRM | UNDER FLANGE HEIGHT | 0.631 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 43.0 ROCKWELL C MINIMUM OVERALL AND 47.0 ROCKWELL C MAXIMUM OVERALL |
| CQKM | SEATING SURFACE SHAPE | FLAT |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.187 INCHES NOMINAL THIRD STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.375 INCHES NOMINAL FIRST STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.390 INCHES MINIMUM SECOND STEP AND 0.410 INCHES MAXIMUM SECOND STEP |
| CRTL | CRITICALITY CODE JUSTIFICATION | ABKK |
| MATT | MATERIAL | STEEL COMP 440C OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN FLANGED |
| Relevant Components for NSN - 4820-01-049-5843, 4820010495843 | ||||
| 4820-01-573-8320 (4820015738320) | 4820-00-467-8973 (4820004678973) | 4820-01-386-0694 (4820013860694) | 4820-00-757-2955 (4820007572955) | |
| 4820-01-182-4540 (4820011824540) | 4810-00-405-7557 (4810004057557) | 4810-01-714-4038 (4810017144038) | 4820-00-289-3941 (4820002893941) | |
| 4810-01-498-2634 (4810014982634) | 4820-01-153-1851 (4820011531851) | 4820-01-232-8015 (4820012328015) | 4820-01-425-3725 (4820014253725) | |
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