The Valve,vent and Drain, cataloged under National Stock Number 4820-00-892-5934, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-892-5934 |
| Primary Part Number | 910D946M0NEL |
| Item Name | Valve,vent and Drain |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | NICKEL-COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 910D946M0NEL | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 40-1725 | 5/2 Secondary reference U.S. Government activity |
| B-1-77108 | 5/9 Secondary reference Bechtel Technical Services Inc Machinery Apparatus Opn |
| 910D946 | 3/1 Design control — primary reference Westinghouse Electric Corp |
NSN 4820-00-892-5934 is a Valve,vent and Drain, manufactured by Westinghouse Electric Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-892-5934 has 1 manufacturer part number on file: 910D946M0NEL (Westinghouse Electric Corp).
3 possible matches (shared part number, not a government interchangeability claim): 4820-00-892-5935, 2825-01-176-5802, 4730-01-446-2112. Verify interchangeability with system specifications before substitution.
Key specifications for 910D946M0NEL: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: NICKEL-COPPER ALLOY. 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.
NSN 4820-00-892-5934 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.