The Disk,valve, cataloged under National Stock Number 4820-01-035-9629, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-035-9629 |
| Primary Part Number | 0055000254 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Taper Minor Diameter | 2.742 INCHES NOMINAL IN |
| Style Designator | SOLID WEDGE |
| Taper Major Diameter | 2.747 INCHES NOMINAL IN |
| Nominal Thread Size | 0.875 INCHES IN |
| Taper Length | 1.312 INCHES NOMINAL IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | NICKEL ALLOY |
| Thread Series Designator | UNS |
| 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 |
|---|---|
| 0055000254 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| NMP1118PC30A | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| 005-304-0254 | C/1 Advisory reference — outside the item-of-supply concept Kunkle Industries Inc Lonergan Valve Div |
| NMP1118 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP1118PC30A | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP-1118 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP1118PC30A | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 005-500-0254 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 005-50-0254 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 005-50-0254 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
NSN 4820-01-035-9629 is a Disk,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-035-9629 has 2 manufacturer part numbers on file: 0055000254 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NMP1118PC30A (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-527-3397. Verify interchangeability with system specifications before substitution.
Key specifications for 0055000254: Overall Height: 2.344 INCHES NOMINAL IN; Taper Minor Diameter: 2.742 INCHES NOMINAL IN; Style Designator: SOLID WEDGE; Taper Major Diameter: 2.747 INCHES NOMINAL IN. 9 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.