The Valve,vacuum Regulating, cataloged under National Stock Number 4820-01-412-7440, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fairchild Industrial Products Company. Government technical data includes 14 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. 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 | 4820-01-412-7440 |
| Primary Part Number | 16223 |
| Item Name | Valve,vacuum Regulating |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fairchild Industrial Products Company |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| First End Thread Series Designator | NPT |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | -40.0 FAHRENHEIT DEGF |
| Temp Rating | 200.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | IDENTICAL |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| Body Material | ALUMINUM ALLOY |
| First End Connection Type | THREADED INTERNAL PIPE |
| Temp Adjustability | ADJUSTABLE |
| Media for Which Designed | AIR |
| First End Nominal Thread Size | 0.375 INCHES IN |
| 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 |
|---|---|
| 16223 PRIMARY | Fairchild Industrial Products Company (USA) |
NSN 4820-01-412-7440 is a Valve,vacuum Regulating, manufactured by Fairchild Industrial Products Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-412-7440 has 1 manufacturer part number on file: 16223 (Fairchild Industrial Products Company).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-589-5090. Verify interchangeability with system specifications before substitution.
Key specifications for 16223: Flow Control Device: DIAPHRAGM; First End Thread Series Designator: NPT; First End Thread Direction: RIGHT-HAND; Temp Rating: -40.0 FAHRENHEIT DEGF. 14 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.