The Seat,valve, cataloged under National Stock Number 4820-01-707-0895, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Airtronics, Llc. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Seat,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Airtronics, Llc (CAGE 58078); Mac Aerospace Corp (CAGE 0LGT4); Coanda Company Llc, the (CAGE 8K2A7); United Dynamics, Inc (CAGE 0XWR4) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-707-0895 |
| Primary Part Number | 520-13011-2 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Airtronics, Llc |
| 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 |
|---|---|
| 520-13011-2 | Airtronics, Llc (USA) |
| 520-13011-2 | Mac Aerospace Corp (USA) |
| 520-13011-2 | Coanda Company Llc, the (USA) |
| 520-13011-2 | United Dynamics, Inc (USA) |
| Reference | Meaning |
|---|---|
| 520-13011-2 | 3/2 Design control — primary reference U.S. Government activity |
| 520-13011 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-707-0895 is a Seat,valve, manufactured by Airtronics, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-707-0895 has 4 manufacturer part numbers on file: 520-13011-2 (Airtronics, Llc), 520-13011-2 (Mac Aerospace Corp), 520-13011-2 (Coanda Company Llc, the), 520-13011-2 (United Dynamics, Inc).
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.