The Valve,vacuum Regulating, cataloged under National Stock Number 4820-01-251-0971, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Megator Corp. Government technical data includes 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-251-0971 |
| Primary Part Number | 1890/20 |
| Item Name | Valve,vacuum Regulating |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Megator Corp |
| Status | ACTIVE |
| Body Material | STEEL |
| Media for Which Designed | OIL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-251-0971 is a Valve,vacuum Regulating, manufactured by Megator Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-251-0971 has 2 manufacturer part numbers on file: DX2171 (Megator Corp), 1890/20 (Megator Corp).
Key specifications for 1890/20: Body Material: STEEL; Media for Which Designed: OIL. 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.