The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-01-645-9033, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Textron Aviation Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-645-9033 |
| Primary Part Number | 25-7PV65-157A |
| Item Name | Valve Assembly,environmental Con |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 25-7PV65-157A PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 25-7PV65-89A | 5/9 Secondary reference Beechcraft Corporation Dba Textron Aviation |
| 25-7PV65-157A | 3/9 Design control — primary reference Beechcraft Corporation Dba Textron Aviation |
NSN 1660-01-645-9033 is a Valve Assembly,environmental Con, manufactured by Textron Aviation Inc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-645-9033 has 1 manufacturer part number on file: 25-7PV65-157A (Textron Aviation Inc).
Key specifications for 25-7PV65-157A: Special Features: THE ITEM IS PART OF THE VENTRAL TANK; Part Name Assigned by Controlling Agency: VALVE ASSEMBLY-VENT FLOAT, RH; End Item Identification: AIRCRAFT, HAWKER 800XP/850XP. 0 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.