The Valve,vent, cataloged under National Stock Number 4820-01-394-8185, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Waukesha Bearings Corporation. 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-394-8185 |
| Primary Part Number | 000-991-407-017 |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Waukesha Bearings Corporation |
| Status | ACTIVE |
| Material | BRONZE BODY |
| Material | RUBBER NATURAL SEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2244-1-1 | W & O Supply Inc (USA) |
| 000-991-407-017 PRIMARY | Waukesha Bearings Corporation (USA) |
NSN 4820-01-394-8185 is a Valve,vent, manufactured by Waukesha Bearings Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-394-8185 has 2 manufacturer part numbers on file: 2244-1-1 (W & O Supply Inc), 000-991-407-017 (Waukesha Bearings Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-481-3605. Verify interchangeability with system specifications before substitution.
Key specifications for 000-991-407-017: Special Features: 4IN CHECK TYPE W/PROTECTING SCREEN4IN CHECK TYPE W/PROTECTING SCREEN IN; End Item Identification: NPC SSRS;WAUKESHA BEARING CORPNPC SSRS;WAUKESHA BEARING CORP; Material: BRONZE BODY; Material: RUBBER NATURAL SEAT. 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.