The Piston,valve, cataloged under National Stock Number 4810-01-262-1139, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4810-01-262-1139 |
| Item Name | Piston,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Status | ACTIVE |
| Valve Design Control Activity | 88773 |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 9334-01-0750-500 | 5/9 Secondary reference U.S. Government activity |
| 9334-00-0000 | D/9 Drawing number reference only U.S. Government activity |
| 9334-01-0750-500 | 3/2 Design control — primary reference U.S. Government activity |
| 9334-00-0000 | 5/9 Secondary reference U.S. Government activity |
| 9334-00-0000 PIECE 68,70,75 | 5/9 Secondary reference U.S. Government activity |
NSN 4810-01-262-1139 is a Piston,valve, classified under FSC 4810, Valves, Powered. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-437-4297, 4810-01-528-6572, 5307-01-707-8813. Verify interchangeability with system specifications before substitution.
Key specifications for 4810-01-262-1139: Special Features: INCLUDES BRASS INSERT AND PLASTIC KNOB; Valve Design Control Activity: 88773; Material: COPPER ALLOY. 2 specifications are 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.