The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-053-9680, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc Div Aerospace-South Bend (bendix Dr). Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-053-9680 |
| Primary Part Number | 2537984 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| Status | ACTIVE |
| Outside Diameter | 1.375 INCHES NOMINAL IN |
| Material Thickness | 0.037 INCHES NOMINAL IN |
| Material | RUBBER AND 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 |
|---|---|
| 2537984 PRIMARY | Honeywell International Inc Div Aerospace-South Bend (bendix Dr) (USA) |
| Reference | Meaning |
|---|---|
| 2537984 | 5/9 Secondary reference Unison Industries Llc |
NSN 4820-01-053-9680 is a Diaphragm,actuator Valve,special, manufactured by Honeywell International Inc Div Aerospace-South Bend (bendix Dr), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-053-9680 has 1 manufacturer part number on file: 2537984 (Honeywell International Inc Div Aerospace-South Bend (bendix Dr)).
Key specifications for 2537984: Overall Height: 1.495 INCHES NOMINAL IN; Outside Diameter: 1.375 INCHES NOMINAL IN; Material Thickness: 0.037 INCHES NOMINAL IN; Material: RUBBER AND STEEL CORROSION RESISTING. 3 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.