| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-081-7872 (010817872) |
| NCB Code | USA (01) |
| Manufacturer | Eaton Aerospace Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKK | FLANGE DIAMETER | 0.630 INCHES MINIMUM AND 0.632 INCHES MAXIMUM |
| ADAR | BODY OUTSIDE DIAMETER | 0.530 INCHES NOMINAL |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.690 NOMINAL INCHES |
| AJRM | UNDER FLANGE HEIGHT | 0.255 INCHES NOMINAL |
| AJSG | SEAT ANGLE IN DEG | 90.000 NOMINAL |
| CQKM | SEATING SURFACE SHAPE | ANGULAR |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.190 NOMINAL INCHES SECOND STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.313 NOMINAL INCHES FIRST STEP |
| FEAT | SPECIAL FEATURES | TWO HOLES 0.100 IN. DIA THRU |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225,TYPE2024-T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | ANODIZE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN FLANGED |
| Relevant Components for NSN - 4820-01-081-7872, 4820010817872 | ||||
| 4820-01-396-8269 (4820013968269) | 4820-01-394-6183 (4820013946183) | 4820-00-971-1986 (4820009711986) | 4820-01-631-7474 (4820016317474) | |
| 4810-01-315-8174 (4810013158174) | 4820-01-045-1164 (4820010451164) | 4820-01-169-9733 (4820011699733) | 4820-01-233-9010 (4820012339010) | |
| 4820-01-169-8577 (4820011698577) | 4820-01-130-1407 (4820011301407) | 4810-01-641-9373 (4810016419373) | 4820-01-646-8601 (4820016468601) | |
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