The Valve,vacuum Regulating, cataloged under National Stock Number 4820-01-667-9902, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ritchie Engineering Co Inc. 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 | 4820-01-667-9902 |
| Primary Part Number | 18985 |
| Item Name | Valve,vacuum Regulating |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ritchie Engineering Co Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 18985 PRIMARY | Ritchie Engineering Co Inc (USA) |
NSN 4820-01-667-9902 is a Valve,vacuum Regulating, manufactured by Ritchie Engineering Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-667-9902 has 1 manufacturer part number on file: 18985 (Ritchie Engineering Co Inc).
Key specifications for 18985: Special Features: 5/16 INCH VACUUM/CHANGE VALVE WITH SIDE PORT IN; Part Name Assigned by Controlling Agency: 4-IN-1 BALL VALVE TOOL. 0 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.