The Indicator,valve Opening, cataloged under National Stock Number 4810-01-326-2980, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Eaton Aerospace Llc Sterer Engineering Morgan Actuators. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Indicator,valve Opening |
| FSC / FSG | 4810 — Valves, Powered (FSG 48) |
| Manufacturers | Eaton Aerospace Llc Sterer Engineering Morgan Actuators (CAGE 52906) |
| Parameter | Value |
|---|---|
| NSN | 4810-01-326-2980 |
| Primary Part Number | 91021-1 |
| Item Name | Indicator,valve Opening |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Eaton Aerospace Llc Sterer Engineering Morgan Actuators |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 91021-1 | Eaton Aerospace Llc Sterer Engineering Morgan Actuators (USA) |
| Reference | Meaning |
|---|---|
| 91021 | 3/9 Design control — primary reference Eaton Aerospace Llc Sterer Engineering Morgan Actuators |
| 91021-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4810-01-326-2980 is a Indicator,valve Opening, manufactured by Eaton Aerospace Llc Sterer Engineering Morgan Actuators, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-326-2980 has 1 manufacturer part number on file: 91021-1 (Eaton Aerospace Llc Sterer Engineering Morgan Actuators).
4 possible matches (shared part number, not a government interchangeability claim): 5945-01-332-2625, 3120-01-420-2735, 6680-01-529-9836. Verify interchangeability with system specifications before substitution.
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.