| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-859-3789 (008593789) |
| NCB Code | USA (00) |
| Manufacturer | Lawler Manufacturing Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| CQJX | NOMINAL THREAD SIZE | 1.875 INCHES SINGLE THREADED PORTION |
| AAJD | THREAD CLASS | 2A SINGLE THREADED PORTION |
| AASA | THREAD LENGTH | 0.375 INCHES NOMINAL SINGLE THREADED PORTION |
| ABKK | FLANGE DIAMETER | 2.125 INCHES NOMINAL |
| ADAS | BODY INSIDE DIAMETER | 1.500 INCHES NOMINAL |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.375 NOMINAL INCHES |
| AJRM | UNDER FLANGE HEIGHT | 2.500 INCHES NOMINAL |
| AJSG | SEAT ANGLE IN DEG | 32.000 NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 18 SINGLE THREADED PORTION |
| CQKM | SEATING SURFACE SHAPE | ANGULAR |
| FEAT | SPECIAL FEATURES | FOUR SLOTS EQUALLY SPACED 0.250 IN.W,0.156 IN. DEEP,TWO 0.750 IN. HOLES DRILLED THROUGH |
| MATT | MATERIAL | STEEL OVERALL |
| STYL | STYLE DESIGNATOR | THREADED FLANGED |
| THSD | THREAD SERIES DESIGNATOR | UNS SINGLE THREADED PORTION |
| Relevant Components for NSN - 4820-00-859-3789, 4820008593789 | ||||
| 4820-00-405-2314 (4820004052314) | 4820-01-644-7717 (4820016447717) | 4820-00-138-5801 (4820001385801) | 4820-01-478-3615 (4820014783615) | |
| 4810-01-231-9665 (4810012319665) | 4810-01-463-1795 (4810014631795) | 4820-01-270-4213 (4820012704213) | 4820-01-482-5390 (4820014825390) | |
| 4810-01-574-6488 (4810015746488) | 4820-01-375-3688 (4820013753688) | 4810-01-486-6370 (4810014866370) | 4820-01-562-8058 (4820015628058) | |
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