| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-633-1985 (006331985) |
| NCB Code | USA (00) |
| Manufacturer | Hamilton Sundstrand Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKK | FLANGE DIAMETER | 0.862 INCHES MINIMUM AND 0.864 INCHES MAXIMUM |
| ADAR | BODY OUTSIDE DIAMETER | 0.749 INCHES MINIMUM AND 0.755 INCHES MAXIMUM |
| ADAS | BODY INSIDE DIAMETER | 0.155 INCHES MINIMUM AND 0.157 INCHES MAXIMUM |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.165 NOMINAL MILS AND 0.255 NOMINAL CENTIMETERS |
| AJRM | UNDER FLANGE HEIGHT | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| CQKM | SEATING SURFACE SHAPE | FLAT |
| FEAT | SPECIAL FEATURES | DRILL NO47,0.079 DIA,THRU 3 HOLESEQUALLY SPACED |
| MATT | MATERIAL | STEEL OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN FLANGED |
| Relevant Components for NSN - 4820-00-633-1985, 4820006331985 | ||||
| 4820-99-999-0878 (4820999990878) | 4820-99-998-8953 (4820999988953) | 4820-99-997-1591 (4820999971591) | 4820-99-996-1189 (4820999961189) | |
| 4820-99-995-8957 (4820999958957) | 4820-99-993-9033 (4820999939033) | 4820-99-993-8911 (4820999938911) | 4820-99-993-5028 (4820999935028) | |
| 4820-99-990-1605 (4820999901605) | 4820-99-989-1151 (4820999891151) | 4820-99-989-0745 (4820999890745) | 4820-99-988-8280 (4820999888280) | |
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