The Seat,valve, cataloged under National Stock Number 4820-00-606-1602, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-606-1602 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Body Outside Diameter | 1.748 INCHES NOMINAL IN |
| Seal Accommodation Type | RECESSED |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PLAIN |
| Body Inside Diameter | 1.000 INCHES NOMINAL IN |
| Seat Radius | 0.500 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 3W34478 | 5/9 Secondary reference U.S. Government activity |
| 3W34478 | 5/9 Secondary reference Ingersoll Rand Co |
| 3W34478 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 3W34478 | C/1 Advisory reference — outside the item-of-supply concept Ingersoll-Rand Company Dba Ingersoll-Rand |
| 3W34478 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 4820-00-606-1602 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-606-1602: Overall Height: 0.531 INCHES NOMINAL IN; Body Outside Diameter: 1.748 INCHES NOMINAL IN; Seal Accommodation Type: RECESSED; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM OVERALL. 8 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.