The Seat,valve, cataloged under National Stock Number 4820-01-184-9455, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-184-9455 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Material | RUBBER POLYBUTADIENE SEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| B542-5TL | 3/9 Design control — primary reference Henry Technologies, Inc. |
| 55400-S5900-871112 | D/9 Drawing number reference only Naval Sea Systems Command |
| SK5050-N PIECE 10 3/8 IN | 5/9 Secondary reference Henry Technologies, Inc. |
| SK5050-N-C PIEC | C/1 Advisory reference — outside the item-of-supply concept Henry Technologies, Inc. |
| SK5050-N | D/9 Drawing number reference only Henry Technologies, Inc. |
NSN 4820-01-184-9455 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-184-9455: Material: RUBBER POLYBUTADIENE SEAT. 1 specification is 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.