The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-357-2550, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-357-2550 |
| Primary Part Number | 82660-1 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 400.0 FAHRENHEIT MAXIMUM DEGF |
| Outside Diameter | 1.500 INCHES NOMINAL IN |
| Taper Minor Diameter | 1.310 INCHES NOMINAL IN |
| Style Designator | SPECIAL SHAPED |
| Material Thickness | 0.014 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN |
| Media for Which Designed | AIR |
| Material | PLASTIC |
| 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 |
|---|---|
| 82660 | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 82660-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 3-150-125-CVF-1 | Bellofram Corporation (USA) |
| D150-131-125-017 | Diacom Corporation (USA) |
| Reference | Meaning |
|---|---|
| 82660-1 | 5/9 Secondary reference United Technologies Corp Hamilton Sundstrand Corp |
| 82660 | 5/9 Secondary reference United Technologies Corp Hamilton Sundstrand Corp |
NSN 4820-01-357-2550 is a Diaphragm,actuator Valve,special, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-357-2550 has 4 manufacturer part numbers on file: 82660 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 82660-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 3-150-125-CVF-1 (Bellofram Corporation), D150-131-125-017 (Diacom Corporation).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-385-7313. Verify interchangeability with system specifications before substitution.
Key specifications for 82660-1: Overall Height: 1.250 INCHES NOMINAL IN; Temp Rating: -65.0 FAHRENHEIT MINIMUM AND 400.0 FAHRENHEIT MAXIMUM DEGF; Outside Diameter: 1.500 INCHES NOMINAL IN; Taper Minor Diameter: 1.310 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.