The Valve,linear,directional Control, cataloged under National Stock Number 4820-01-476-2998, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fisher Controls Co Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-476-2998 |
| Primary Part Number | 167A-21 |
| Item Name | Valve,linear,directional Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fisher Controls Co Inc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.250 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 350.0 FAHRENHEIT GAS AND -20.0 FAHRENHEIT GAS DEGF |
| Operating Pressure and Type | 250.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Connection Type | THREADED INTERNAL PIPE |
| End Connection Quantity | 3 |
| Body Material | ALUMINUM |
| Valve Operation Method | GAS |
| Flow Pattern Quantity | 2 |
| 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 |
|---|---|
| 167A-21 PRIMARY | Fisher Controls Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 167A | C/1 Advisory reference — outside the item-of-supply concept Fisher Controls Co Inc |
NSN 4820-01-476-2998 is a Valve,linear,directional Control, manufactured by Fisher Controls Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-476-2998 has 1 manufacturer part number on file: 167A-21 (Fisher Controls Co Inc).
Key specifications for 167A-21: Nominal Pipe Size Accommodated: 0.250 INCHES IN; Maximum Operating Temp and Media for Which Designed: 350.0 FAHRENHEIT GAS AND -20.0 FAHRENHEIT GAS DEGF; Operating Pressure and Type: 250.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS; Connection Type: THREADED INTERNAL PIPE. 8 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.