The Hose,air Duct, cataloged under National Stock Number 4720-00-522-2204, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is De Havilland Parts & Aerostructures Limited Div Field Aviation. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-00-522-2204 |
| Primary Part Number | C4V1428-1 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | De Havilland Parts & Aerostructures Limited Div Field Aviation |
| Status | ACTIVE |
| Hose Weight | 2.690 OUNCES PER LINEAR FOOT OZ |
| Measuring Method and Length | 2.500 INCHES NOMINAL OVERALL IN |
| Minimum Inside Bending Radius | 0.500 INCHES IN |
| Connection Style | ROUND FIRST END |
| Connection Type | SOFT FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.100 INCHES NOMINAL IN |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH (PSI) NOMINAL EXTERNAL LBS |
| Inside Diameter | 1.500 INCHES NOMINAL FIRST END IN |
| End Overall Length | 1.500 INCHES NOMINAL FIRST END IN |
| End Inside Diameter | 1.700 INCHES NOMINAL FIRST END IN |
| Material | FIBERGLASS AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SINGLE PLY |
| 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 |
|---|---|
| C4V1428-1 PRIMARY | De Havilland Parts & Aerostructures Limited Div Field Aviation (CAN) |
| Reference | Meaning |
|---|---|
| C4V1428-1 | 5/9 Secondary reference De Havilland Aircraft of Canada Limited |
NSN 4720-00-522-2204 is a Hose,air Duct, manufactured by De Havilland Parts & Aerostructures Limited Div Field Aviation, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-522-2204 has 1 manufacturer part number on file: C4V1428-1 (De Havilland Parts & Aerostructures Limited Div Field Aviation).
Key specifications for C4V1428-1: Hose Weight: 2.690 OUNCES PER LINEAR FOOT OZ; Measuring Method and Length: 2.500 INCHES NOMINAL OVERALL IN; Minimum Inside Bending Radius: 0.500 INCHES IN; Connection Style: ROUND FIRST END. 13 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.