The Float Rest Screen,vent Valve, cataloged under National Stock Number 4820-01-439-3897, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-439-3897 |
| Item Name | Float Rest Screen,vent Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | COMPONENT OF 1 1/2 IN.INVERTED VENT CHECK VALVE,W/OUT COVER IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| VV-0150-11105577 PC 4 | 3/9 Design control — primary reference Kings Point Machinery Inc Dba Kpm |
| VV-0150-11105577 PC 7 | 5/9 Secondary reference Kings Point Machinery Inc Dba Kpm |
NSN 4820-01-439-3897 is a Float Rest Screen,vent Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-439-3897: General Characteristics Item Description: COMPONENT OF 1 1/2 IN.INVERTED VENT CHECK VALVE,W/OUT COVER IN; End Item Identification: VENT VALVE;KINGS POINT MACHINERY,MODEL KPM 1027-1 1/2 WO/C; Material: STEEL CORROSION RESISTING. 2 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.