The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-233-4840, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is David Brown Hydraulics Inc Dba Hydreco. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); David Brown Hydraulics Inc Dba Hydreco (CAGE 0E9N0) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-233-4840 |
| Primary Part Number | DV13C2B |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | David Brown Hydraulics Inc Dba Hydreco |
| 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 |
|---|---|
| 121904C | Oshkosh Defense Llc (USA) |
| DV13C2B PRIMARY | David Brown Hydraulics Inc Dba Hydreco (USA) |
| Reference | Meaning |
|---|---|
| DV13C2 | D/9 Drawing number reference only David Brown Hydraulics Inc Dba Hydreco |
| 121904C | 5/9 Secondary reference Oshkosh Corp |
NSN 4820-01-233-4840 is a Valve,regulating,fluid Pressure, manufactured by David Brown Hydraulics Inc Dba Hydreco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-233-4840 has 2 manufacturer part numbers on file: 121904C (Oshkosh Defense Llc), DV13C2B (David Brown Hydraulics Inc Dba Hydreco).
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-242-2973, 4820-01-242-2975, 4820-01-242-2976. Verify interchangeability with system specifications before substitution.
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.