The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-01-182-4065, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1660-01-182-4065 |
| Item Name | Valve Assembly,environmental Con |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | UNIT CONSISTS OF A SPRING LOADED AMBIENT AIR CONTROL VALVE AND A ENGINEHOT AIR BLEED NOZZLE USED IN CONJUNCTI0N WITH A MIXING VALVE TO REGULATE THEFLOW OF HEATED AIR ENTERING THE CABIN FOR DEFROSTING AND HEATING 6.620 IN.NOM O/A H,4.890 IN. NOM O/A W,10.890IN. NOM O/A LG,2.500 LBS MAX WEIGHT LBS |
| 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 |
|---|---|
| 206-070-491-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-01-182-4065 is a Valve Assembly,environmental Con, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-01-182-4065: General Characteristics Item Description: UNIT CONSISTS OF A SPRING LOADED AMBIENT AIR CONTROL VALVE AND A ENGINEHOT AIR BLEED NOZZLE USED IN CONJUNCTI0N WITH A MIXING VALVE TO REGULATE THEFLOW OF HEATED AIR ENTERING THE CABIN FOR DEFROSTING AND HEATING 6.620 IN.NOM O/A H,4.890 IN. NOM O/A W,10.890IN. NOM O/A LG,2.500 LBS MAX WEIGHT LBS; End Item Identification: OH-58 SERIES HELICOPTERS. 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.