The Disk,valve, cataloged under National Stock Number 4820-01-540-8298, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Core Industries Inc. Dba Mueller Steam Specialty. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-540-8298 |
| Primary Part Number | 1-304-33-180 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Core Industries Inc. Dba Mueller Steam Specialty |
| Status | ACTIVE |
| Media for Which Designed | OIL |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| M6708650 | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| 1601-AC/1-216-32-156 PC 3 | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| 1-304-33-180 PRIMARY | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| Reference | Meaning |
|---|---|
| 1601-AC/1-216-32-156 PC 3 | 5/9 Secondary reference W & O Supply Inc |
NSN 4820-01-540-8298 is a Disk,valve, manufactured by Core Industries Inc. Dba Mueller Steam Specialty, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-540-8298 has 3 manufacturer part numbers on file: M6708650 (Core Industries Inc. Dba Mueller Steam Specialty), 1601-AC/1-216-32-156 PC 3 (Core Industries Inc. Dba Mueller Steam Specialty), 1-304-33-180 (Core Industries Inc. Dba Mueller Steam Specialty).
Key specifications for 1-304-33-180: Special Features: NHA: 4820-01-540-8294; VALVE CHECK; Media for Which Designed: OIL; Part Name Assigned by Controlling Agency: VALVE DISC; End Item Identification: NEW CONSTRUCTION LCS1. 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.