The Seat,valve, cataloged under National Stock Number 4820-01-423-9597, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-423-9597 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Style Designator | PLAIN THREADED |
| Material | NICKEL ALLOY B OVERALL |
| 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 |
|---|---|
| NB25221E-0000 4 | C/1 Advisory reference — outside the item-of-supply concept Pima Valve, Llc |
| NB25221E-0000 4IN PART 6 | 5/9 Secondary reference Pima Valve, Llc |
| NB25221E-0000 4IN PART 6 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| NB25221E-0400 PART 6 | 3/9 Design control — primary reference Pima Valve, Llc |
| NB25221E-0400 PART 6 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
NSN 4820-01-423-9597 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-423-9597: Style Designator: PLAIN THREADED; End Item Identification: ARLEIGH BURKE CLASS DDG; Material: NICKEL ALLOY B OVERALL. 2 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.