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| 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 | Huntington Ingalls Incorporated, Derbyshire Machine And Tool Co |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 255669 PC 3 TORLON 4203L | huntington ingalls incorporated | seat valve | RFQ |
| 255669 PC 3 TORLON 4203 | derbyshire machine and tool co | seat valve | RFQ |
| 259089 ITEM 14 TORLON 4203L | huntington ingalls incorporated | seat valve | RFQ |
| 258850 ITEM 85 TORLON 4203L | huntington ingalls incorporated | seat valve | 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 | ||||
| 4810-01-693-0546 (4810016930546) | 4810-01-224-8636 (4810012248636) | 4810-00-181-8826 (4810001818826) | 4810-00-533-2538 (4810005332538) | |
| 4820-01-319-3454 (4820013193454) | 4820-01-154-9733 (4820011549733) | 4810-01-176-9496 (4810011769496) | 4820-01-278-5449 (4820012785449) | |
| 4810-01-152-7681 (4810011527681) | 4810-00-127-2787 (4810001272787) | 4820-00-557-7800 (4820005577800) | 4810-01-469-1460 (4810014691460) | |
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