The Indicator,valve Opening, cataloged under National Stock Number 4810-01-559-8253, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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) |
| Parameter | Value |
|---|---|
| NSN | 4810-01-559-8253 |
| Item Name | Indicator,valve Opening |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| 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 |
| Reference | Meaning |
|---|---|
| 283542-0004 ITEM NO 26 | 5/1 Secondary reference U.S. Government activity |
| 283542-0004 | D/9 Drawing number reference only U.S. Government activity |
| 193383-0026 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4810-01-559-8253 is a Indicator,valve Opening, classified under FSC 4810, Valves, Powered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-559-9010. 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.