The Cap,valve, cataloged under National Stock Number 4820-01-420-4133, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-420-4133 |
| Primary Part Number | 0600454 |
| Item Name | Cap,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Valve Model Number for Which Designed | 5275F |
| Valve Size for Which Designed | 4.000 INCHES IN |
| Material | STEEL |
| Attachment Method | BOLTS |
| 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 |
|---|---|
| 0600454 PRIMARY | The Walworth Company (USA) |
| WALWORTH 5275F 4.00IN IT2 | Valve Automation and Control of San Diego Dba Valve Automation & Control of San Diego Div Valve Automation and Controls of (USA) |
| Reference | Meaning |
|---|---|
| 5272F 4.00IN IT2 | 5/9 Secondary reference The Walworth Company |
| 600454 | 5/9 Secondary reference The Walworth Company |
NSN 4820-01-420-4133 is a Cap,valve, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-420-4133 has 2 manufacturer part numbers on file: 0600454 (The Walworth Company), WALWORTH 5275F 4.00IN IT2 (Valve Automation and Control of San Diego Dba Valve Automation & Control of San Diego Div Valve Automation and Controls of).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-723-6450. Verify interchangeability with system specifications before substitution.
Key specifications for 0600454: Valve Type for Which Designed: GLOBE; Valve Model Number for Which Designed: 5275F; Valve Size for Which Designed: 4.000 INCHES IN; Special Features: CAST CARBON STEEL A-216-WCB. 5 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.