The Valve Operator, cataloged under National Stock Number 4820-01-214-8264, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-214-8264 |
| Primary Part Number | 2640-059 ASSY ASS |
| Item Name | Valve Operator |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUBSAFE ITEMS |
| 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 |
|---|---|
| 2640-059 ASSY ASS | Naval Inventory Control Point Mechanicsburg (USA) |
| 88-D-203 | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 2640-059 ASSY A | 3/1 Design control — primary reference U.S. Government activity |
| 1889808 ASSY A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-214-8264 is a Valve Operator, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-214-8264 has 2 manufacturer part numbers on file: 2640-059 ASSY ASS (Naval Inventory Control Point Mechanicsburg), 88-D-203 (Derbyshire Machine & Tool Co).
Key specifications for 2640-059 ASSY ASS: Reference Number Differentiating Characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUBSAFE ITEMS. 1 specification is 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.