The Disk,valve, cataloged under National Stock Number 4820-01-056-9758, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Granco Manufacturing Inc. Div Granco Pump. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-056-9758 |
| Primary Part Number | DK-PN-34 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Granco Manufacturing Inc. Div Granco Pump |
| Status | ACTIVE |
| Shank Diameter | 1.000 INCHES NOMINAL IN |
| Flange Diameter | 1.785 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| DK-PN-34 PRIMARY | Granco Manufacturing Inc. Div Granco Pump (USA) |
| Reference | Meaning |
|---|---|
| P-20-106 | D/9 Drawing number reference only Granco Manufacturing Inc. Div Granco Pump |
NSN 4820-01-056-9758 is a Disk,valve, manufactured by Granco Manufacturing Inc. Div Granco Pump, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-056-9758 has 1 manufacturer part number on file: DK-PN-34 (Granco Manufacturing Inc. Div Granco Pump).
Key specifications for DK-PN-34: Shank Diameter: 1.000 INCHES NOMINAL IN; Flange Diameter: 1.785 INCHES NOMINAL IN; Overall Height: 2.000 INCHES NOMINAL IN; Style Designator: POPPET. 5 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.