The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-301-0362, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-301-0362 |
| Primary Part Number | Z-5051 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Flow Control Device | STEM AND INTEGRAL DISK |
| Valve Loading Method | SPRING |
| Material | ALUMINUM BODY |
| Media for Which Designed | AIR |
| Filter | NOT INCLUDED |
| 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 |
|---|---|
| RFL 401 1/2IN | Hunt Valve Company, Inc. (USA) |
| Z-5051 PRIMARY | Hunt Valve Company, Inc. (USA) |
| Z-5051-1 | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| RFL 401 1/2IN | 5/9 Secondary reference Hunt Valve Company, Inc. |
| Z-5051-1 | 5/9 Secondary reference Hunt Valve Company, Inc. |
| Z-5051 | 3/9 Design control — primary reference Hunt Valve Company, Inc. |
NSN 4820-01-301-0362 is a Valve,regulating,fluid Pressure, manufactured by Hunt Valve Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-301-0362 has 3 manufacturer part numbers on file: RFL 401 1/2IN (Hunt Valve Company, Inc.), Z-5051 (Hunt Valve Company, Inc.), Z-5051-1 (Hunt Valve Company, Inc.).
Key specifications for Z-5051: Flow Control Device: STEM AND INTEGRAL DISK; Valve Loading Method: SPRING; Special Features: VALVE SIZE 0.750 IN. IN; Material: ALUMINUM BODY. 5 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.