The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-00-993-7432, 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 East/west Industries, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-993-7432 |
| Primary Part Number | 26937 |
| Item Name | Valve Assembly,environmental Con |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | East/west Industries, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | METAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 26937 PRIMARY | East/west Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 26937 | 5/9 Secondary reference Avox Systems Inc Dba Avox Systems Inc |
NSN 1660-00-993-7432 is a Valve Assembly,environmental Con, manufactured by East/west Industries, Inc., classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-993-7432 has 1 manufacturer part number on file: 26937 (East/west Industries, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5325-01-421-9507, 5920-01-571-4578. Verify interchangeability with system specifications before substitution.
Key specifications for 26937: General Characteristics Item Description: METAL. 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.
NSN 1660-00-993-7432 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.