The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-666-3393, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Warren Industries Inc Dba Warren Industries Inc Div Warren-Knight Instrument Co. and N. Amer. Survey Supply Co.. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-666-3393 |
| Primary Part Number | WK-22-4009 |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Warren Industries Inc Dba Warren Industries Inc Div Warren-Knight Instrument Co. and N. Amer. Survey Supply Co. |
| Status | ACTIVE |
| Mounting Facility | INTERNAL THREAD |
| Media for Which Designed | HELIUM |
| 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 |
|---|---|
| WK-22-4009 PRIMARY | Warren Industries Inc Dba Warren Industries Inc Div Warren-Knight Instrument Co. and N. Amer. Survey Supply Co. (USA) |
NSN 4820-01-666-3393 is a Valve,regulating,system Pressure, manufactured by Warren Industries Inc Dba Warren Industries Inc Div Warren-Knight Instrument Co. and N. Amer. Survey Supply Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-666-3393 has 1 manufacturer part number on file: WK-22-4009 (Warren Industries Inc Dba Warren Industries Inc Div Warren-Knight Instrument Co. and N. Amer. Survey Supply Co.).
Key specifications for WK-22-4009: Mounting Facility: INTERNAL THREAD; Part Name Assigned by Controlling Agency: HELIUM TANK REGULATOR ASSEMBLY; End Item Identification: 6660-01-633-9624;METEOROLOGICAL STATION,MANUAL; Media for Which Designed: HELIUM. 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.