The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-328-5514, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Robert Fisher Dba Fisher Industries. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-328-5514 |
| Primary Part Number | FGS-AP-1000 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Robert Fisher Dba Fisher Industries |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| First End Style Designator | PLAIN |
| Temp Rating | 200.0 FAHRENHEIT NOMINAL DEGF |
| First End Connection Type | THREADED INTERNAL PIPE |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 1/4-18 NPT FIRST END |
| Outlet Pressure Setting | ERR-060 |
| 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 |
|---|---|
| FGS-AP-1000 | Robert Fisher Dba Fisher Industries (USA) |
| Reference | Meaning |
|---|---|
| 131-008 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-328-5514 is a Valve,regulating,fluid Pressure, manufactured by Robert Fisher Dba Fisher Industries, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-328-5514 has 1 manufacturer part number on file: FGS-AP-1000 (Robert Fisher Dba Fisher Industries).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-468-5598. Verify interchangeability with system specifications before substitution.
Key specifications for FGS-AP-1000: First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; First End Style Designator: PLAIN; Temp Rating: 200.0 FAHRENHEIT NOMINAL DEGF. 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.