The Valve,vacuum Regulating, cataloged under National Stock Number 4820-01-431-6601, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-431-6601 |
| Item Name | Valve,vacuum Regulating |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK, FLAT |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Style Designator | PLAIN |
| End Connection Quantity | 1 |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Outside Diameter Tube Accommodated | 1.000 INCHES NOMINAL IN |
| Furnished Items | INLET CONNECTION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| V-1046-31 CP | C/1 Advisory reference — outside the item-of-supply concept Chart Inc Div Cryogenic Systems Div |
| V-1046-31 | 3/9 Design control — primary reference Chart Inc Div Cryogenic Systems Div |
NSN 4820-01-431-6601 is a Valve,vacuum Regulating, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-431-6601: Flow Control Device: DISK, FLAT; Body Style: SINGLE CONNECTION, STRAIGHT FLOW; First End Style Designator: PLAIN; End Connection Quantity: 1. 8 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.