The Seat,valve, cataloged under National Stock Number 4820-01-207-2458, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Universal Industrial Products Co Div of Core Industries Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-207-2458 |
| Primary Part Number | 2-5-51-02-03 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Universal Industrial Products Co Div of Core Industries Inc |
| Status | ACTIVE |
| Body Outside Diameter | 4.750 INCHES NOMINAL IN |
| Seal Accommodation Type | GROOVED |
| Style Designator | PLAIN |
| Body Inside Diameter | 2.500 INCHES NOMINAL IN |
| Material | RUBBER BUNA N 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 |
| Part Number | Manufacturer |
|---|---|
| 2-5-51-02-03 PRIMARY | Universal Industrial Products Co Div of Core Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 2.5-52-02-3 | C/1 Advisory reference — outside the item-of-supply concept Core Industries Inc. Dba Mueller Steam Specialty |
| 2-5-51-02-3 | 5/9 Secondary reference Core Industries Inc. Dba Mueller Steam Specialty |
NSN 4820-01-207-2458 is a Seat,valve, manufactured by Universal Industrial Products Co Div of Core Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-207-2458 has 1 manufacturer part number on file: 2-5-51-02-03 (Universal Industrial Products Co Div of Core Industries Inc).
Key specifications for 2-5-51-02-03: Body Outside Diameter: 4.750 INCHES NOMINAL IN; Seal Accommodation Type: GROOVED; Style Designator: PLAIN; Body Inside Diameter: 2.500 INCHES NOMINAL IN. 6 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.