The Seat,valve, cataloged under National Stock Number 4820-01-550-3699, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-550-3699 |
| Primary Part Number | 190000 PC 8 90P9CK-16CP |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | MIL-R-83248 TYI CLII MIL SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material | PLASTIC SEAT |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 190000 PC 8 90P9CK-16CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 190000-16-8CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 90P9CK-16CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-190000-16-8CP | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-190000-16-8CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 90P9CK-16 | 3/1 Design control — primary reference Eaton Corporation Dba Eaton Inoac Div Eaton |
| G547-0002-190000-16-8 | 5/1 Secondary reference U.S. Government activity |
| 7550478-190000-16-8 | 5/1 Secondary reference Naval Sea Systems Command |
| 190000-16-8 | 5/1 Secondary reference U.S. Government activity |
| 190000 PC 8 90P9CK-16 | 5/1 Secondary reference Eaton Corporation Dba Eaton Inoac Div Eaton |
| 7550478 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-550-3699 is a Seat,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-550-3699 has 5 manufacturer part numbers on file: 190000 PC 8 90P9CK-16CP (Naval Inventory Control Point Mechanicsburg), 190000-16-8CP (Naval Inventory Control Point Mechanicsburg), 90P9CK-16CP (Naval Inventory Control Point Mechanicsburg), 7550478-190000-16-8CP (Naval Inventory Control Point Mechanicsburg), G547-0002-190000-16-8CP (Naval Inventory Control Point Mechanicsburg).
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-550-3716, 4820-01-553-4600, 4820-01-553-4606. Verify interchangeability with system specifications before substitution.
Key specifications for 190000 PC 8 90P9CK-16CP: Criticality Code Justification: ZZZY; Material Document and Classification: MIL-R-83248 TYI CLII MIL SPEC SINGLE MATERIAL RESPONSE SEAT; End Item Identification: SSGN CONVERSION; Material: PLASTIC SEAT. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.