The Valve,linear,directional Control, cataloged under National Stock Number 4810-01-554-3475, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Sun Hydraulics Corporation. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4810-01-554-3475 |
| Primary Part Number | DFDB-8DN |
| Item Name | Valve,linear,directional Control |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Sun Hydraulics Corporation |
| 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 |
|---|---|
| DFDB-8DN PRIMARY | Sun Hydraulics Corporation (USA) |
| A607-07V-A06 ITEM 4 | Price Engineering Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| AMD-1740 | D/9 Drawing number reference only Appleton Marine Inc |
NSN 4810-01-554-3475 is a Valve,linear,directional Control, manufactured by Sun Hydraulics Corporation, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-554-3475 has 2 manufacturer part numbers on file: DFDB-8DN (Sun Hydraulics Corporation), A607-07V-A06 ITEM 4 (Price Engineering Company, Llc).
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-554-3486, 4730-01-554-3493, 3110-01-555-1320. Verify interchangeability with system specifications before substitution.
Key specifications for DFDB-8DN: Special Features: NHA: CRANE ASSEMBLY MODEL FB30-27; Part Name Assigned by Controlling Agency: VALVE, 2-WAY POPPET, E-STOP; End Item Identification: NEW CONSTRUCTION LPD21. 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.