The Pipe Assembly,air Conditioning-H, cataloged under National Stock Number 4520-01-335-9725, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-335-9725 |
| Item Name | Pipe Assembly,air Conditioning-H |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | ITEM CONSIST OF,1 EA REDUCER P/N 13229E8661 AND 1 EA COLLAR P/N 13229E8663;DESIGNED FOR THE PURPOSE OF CHANGING THE NORMAL SIZE OF AN AIR FLOW PIPEON THE RETURN SIDE OF A HEATER;INCLUDES METAL CLAMP TO SECURE BOTH PARTS TOGETHER |
| 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 |
|---|---|
| 13229E8664-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4520-01-335-9725 is a Pipe Assembly,air Conditioning-H, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-01-335-9725: General Characteristics Item Description: ITEM CONSIST OF,1 EA REDUCER P/N 13229E8661 AND 1 EA COLLAR P/N 13229E8663;DESIGNED FOR THE PURPOSE OF CHANGING THE NORMAL SIZE OF AN AIR FLOW PIPEON THE RETURN SIDE OF A HEATER;INCLUDES METAL CLAMP TO SECURE BOTH PARTS TOGETHER; End Item Identification: 4520-01-254-8548. 1 specification is 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.