The Valve,butterfly, cataloged under National Stock Number 4820-01-252-4588, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dover Resources, Inc. Div Norriseal. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Dover Resources, Inc. Div Norriseal (CAGE 1NB39) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-252-4588 |
| Primary Part Number | 59101C863 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dover Resources, Inc. Div Norriseal |
| 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 |
|---|---|
| 59101C863 PRIMARY | Dover Resources, Inc. Div Norriseal (USA) |
| 911J568 | Dover Resources, Inc. Div Norriseal (USA) |
| 6 INCH R1011-64AA-1AM | Dover Resources, Inc. Div Norriseal (USA) |
| Reference | Meaning |
|---|---|
| 911-568 | D/9 Drawing number reference only Dover Resources, Inc. Div Norriseal |
| 911-568 | 5/9 Secondary reference U.S. Government activity |
| 911J568 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-252-4588 is a Valve,butterfly, manufactured by Dover Resources, Inc. Div Norriseal, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-252-4588 has 3 manufacturer part numbers on file: 59101C863 (Dover Resources, Inc. Div Norriseal), 911J568 (Dover Resources, Inc. Div Norriseal), 6 INCH R1011-64AA-1AM (Dover Resources, Inc. Div Norriseal).
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.