The Valve,linear,directional Control, cataloged under National Stock Number 4820-00-813-7451, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-813-7451 |
| Primary Part Number | SPD4D4 |
| Item Name | Valve,linear,directional Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| 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 |
|---|---|
| SPD4D4 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| Reference | Meaning |
|---|---|
| SPD4D4 | 3/9 Design control — primary reference Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division |
| 9138 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-813-7451 is a Valve,linear,directional Control, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-813-7451 has 1 manufacturer part number on file: SPD4D4 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division).
5 possible matches (shared part number, not a government interchangeability claim): 5905-00-929-7160, 4820-01-129-5608, 3040-01-151-8675. Verify interchangeability with system specifications before substitution.
Key specifications for SPD4D4: Special Features: STEEL O/A;2 MANUALLY OPERATED SPOOL;HYDRAULIC OILS MEDIA;2 PORTS SZ 0.750-14 NPT INLET AND OUTLET;4 CYLINDER PORTS SZ 0.500-14 NPT;BASE MTD W/3 MTGHOLES SZ 0.400 IN. IN. 0 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.