The Valve,vent, cataloged under National Stock Number 4820-01-442-2580, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-442-2580 |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Bolt Circle Nominal Diameter | 7.500 INCHES FIRST END IN |
| Connection Type | FLANGE FIRST END |
| Bolt Hole Nominal Diameter | 0.750 INCHES FIRST END IN |
| Nominal Outside Diameter | 9.000 INCHES FIRST END IN |
| Bolt Hole Quantity | 8 FIRST END |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY 836 BODY |
| Nominal Thickness | 0.940 INCHES FIRST END IN |
| 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 |
|---|---|
| 1027 | D/9 Drawing number reference only Kings Point Machinery Inc Dba Kpm |
| DWG NO. VV-0400-55155577 REV 0 | 5/9 Secondary reference Kings Point Machinery Inc Dba Kpm |
| 1027F-4IN | C/1 Advisory reference — outside the item-of-supply concept Kings Point Machinery Inc Dba Kpm |
| VV-0400-55155577 | 3/9 Design control — primary reference Kings Point Machinery Inc Dba Kpm |
NSN 4820-01-442-2580 is a Valve,vent, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-442-2580: Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Bolt Circle Nominal Diameter: 7.500 INCHES FIRST END IN; Connection Type: FLANGE FIRST END. 10 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.