| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-573-7919 (015737919) |
| NCB Code | USA (01) |
| Manufacturer | Derbyshire Machine And Tool Co, Huntington Ingalls Incorporated |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 255669 PC 3 TORLON 4203 | derbyshire machine and tool co | seat valve | 71905 | RFQ |
| 255669 PC 3 TORLON 4203L | huntington ingalls incorporated | seat valve | 43689 | RFQ |
| 258850 ITEM 85 TORLON 4203L | huntington ingalls incorporated | seat valve | 43689 | RFQ |
| 259089 ITEM 14 TORLON 4203L | huntington ingalls incorporated | seat valve | 43689 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKW | OVERALL HEIGHT | 0.259 INCHES NOMINAL |
| ADAR | BODY OUTSIDE DIAMETER | 1.062 INCHES NOMINAL |
| ADAS | BODY INSIDE DIAMETER | 0.562 INCHES NOMINAL |
| AGAV | END ITEM IDENTIFICATION | 4820-01-259-1319, P/N 259089 ASSY A; 4820-01-273-4722, BALL VALVE, P/N 258850 ASST D MOD A-B PLAIN |
| CQKM | SEATING SURFACE SHAPE | RADIAL |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SEAT - 1-WAY SEAL 0-4500 PSI W.P. |
| MATT | MATERIAL | PLASTIC OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | TORLON 4203L AS MFGD BY AMOCO CHEMICAL CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL OR ULTEM 1000 AS MFGD BY GENERAL ELECTRIC COMPANY MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN |
| Relevant Components for NSN - 4820-01-573-7919, 4820015737919 | ||||
| 4820-01-695-0145 (4820016950145) | 4820-01-596-1771 (4820015961771) | 4810-01-187-3363 (4810011873363) | 4810-01-523-6894 (4810015236894) | |
| 4820-00-707-0356 (4820007070356) | 4820-01-568-0815 (4820015680815) | 4820-01-227-9365 (4820012279365) | 4820-01-104-8145 (4820011048145) | |
| 4820-01-299-5713 (4820012995713) | 4820-01-640-9566 (4820016409566) | 4810-01-346-0666 (4810013460666) | 4820-01-655-5932 (4820016555932) | |
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