The Seat,valve, cataloged under National Stock Number 4820-01-382-8773, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-382-8773 |
| Primary Part Number | 7590-39-1 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Seating Surface Shape | O-RING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| N-11398-1-3 PIECE 5 10IN | The Walworth Company (USA) |
| 7590-39-1 PRIMARY | The Walworth Company (USA) |
| 604716 | The Walworth Company (USA) |
| B/M 534207 PIECE 19 | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| 7590-39-1-AA | C/1 Advisory reference — outside the item-of-supply concept The Walworth Company |
NSN 4820-01-382-8773 is a Seat,valve, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-382-8773 has 4 manufacturer part numbers on file: N-11398-1-3 PIECE 5 10IN (The Walworth Company), 7590-39-1 (The Walworth Company), 604716 (The Walworth Company), B/M 534207 PIECE 19 (The Walworth Company).
Key specifications for 7590-39-1: Special Features: USED ON WEDGE GATE VALVE; Seating Surface Shape: O-RING. 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.