The Disk,valve, cataloged under National Stock Number 4820-01-192-1828, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-192-1828 |
| Primary Part Number | C-35833 PIECE 4 2 1/2IN |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Shank Diameter | 0.503 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.281 INCHES NOMINAL IN |
| Pressure Rating | 100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Outside Diameter | 3.375 INCHES NOMINAL IN |
| Style Designator | SWING CHECK |
| Nominal Thread Size | 0.438 INCHES IN |
| Media for Which Designed | OIL OR WATER |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | NICKEL ALLOY |
| Thread Series Designator | UN |
| 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 |
|---|---|
| C-35833 PIECE 4 2 1/2IN PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 38234-K PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| C-35833 | D/9 Drawing number reference only Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
NSN 4820-01-192-1828 is a Disk,valve, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-192-1828 has 2 manufacturer part numbers on file: C-35833 PIECE 4 2 1/2IN (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 38234-K (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-192-4437. Verify interchangeability with system specifications before substitution.
Key specifications for C-35833 PIECE 4 2 1/2IN: Shank Diameter: 0.503 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.281 INCHES NOMINAL IN; Pressure Rating: 100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Outside Diameter: 3.375 INCHES NOMINAL IN. 11 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.