The Valve,linear,directional Control, cataloged under National Stock Number 4820-01-159-5910, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-159-5910 |
| Primary Part Number | D1BL1D |
| 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 Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| D1BL1D PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| KT-3225-1 ITEM 15 PRIMARY | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| KT-3225-1 ITEM 15 | 5/9 Secondary reference Entwistle Co the Kenett Hydraulic Systems Div |
| KT-3225-1 ITEM 15 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| KT-3225 | D/9 Drawing number reference only Parker-Hannifin Corp Div O-Ring Division |
| KT-3225 | D/9 Drawing number reference only Entwistle Co the Kenett Hydraulic Systems Div |
NSN 4820-01-159-5910 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 4820-01-159-5910 has 2 manufacturer part numbers on file: D1BL1D (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), KT-3225-1 ITEM 15 (The Entwistle Company Llc).
Key specifications for D1BL1D: Special Features: 3000.0 PSI. 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.
NSN 4820-01-159-5910 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.