The Disk,valve, cataloged under National Stock Number 4820-01-034-4926, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator. Government technical data includes 7 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-034-4926 |
| Primary Part Number | 72281 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator |
| Status | ACTIVE |
| Shank Diameter | 0.090 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.750 INCHES NOMINAL IN |
| Flange Diameter | 0.125 INCHES NOMINAL IN |
| Style Designator | CONE CHECK |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Under Flange Height | 0.090 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 72281 PRIMARY | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| 72290PC33 | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| Reference | Meaning |
|---|---|
| 72290 | D/9 Drawing number reference only Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator |
NSN 4820-01-034-4926 is a Disk,valve, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-034-4926 has 2 manufacturer part numbers on file: 72281 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), 72290PC33 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-034-5633, 4820-01-034-6769, 5905-01-039-3030. Verify interchangeability with system specifications before substitution.
Key specifications for 72281: Shank Diameter: 0.090 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.750 INCHES NOMINAL IN; Flange Diameter: 0.125 INCHES NOMINAL IN; Overall Height: 0.995 INCHES NOMINAL IN. 7 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.