The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-118-4160, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-118-4160 |
| Item Name | Valve,vacuum Breaking |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK, FLAT |
| First End Thread Direction | RIGHT-HAND |
| Absolute Pressure Range | +0.5 TO 15.0 |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Seat Angle in Deg | 37.0 |
| First End Thread Class | 2A A |
| First End Style Designator | PLAIN |
| End Connection Quantity | 1 |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Outside Diameter Tube Accommodated | 0.625 INCHES NOMINAL IN |
| Material | ALUMINUM BODY |
| Furnished Items | NUT AND WASHER |
| 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 |
|---|---|
| P26-309 | 3/2 Design control — primary reference U.S. Government activity |
| 6083871 | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Corporation Div Rotary and Mission Systems |
| 6083871 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Manassas |
NSN 4820-01-118-4160 is a Valve,vacuum Breaking, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-118-4160: Flow Control Device: DISK, FLAT; First End Thread Direction: RIGHT-HAND; Absolute Pressure Range: +0.5 TO 15.0; Body Style: SINGLE CONNECTION, STRAIGHT FLOW. 13 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.