The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-00-993-5468, 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1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-993-5468 |
| Item Name | Valve Assembly,environmental Con |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | METAL; 1 INCH ON-OFF; OXYGEN; 4.680 IN. NOMINAL OVERALL HEIGHT; 2.680 IN. NOMINAL OVERALL WIDTH IN |
| 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 |
| Reference | Meaning |
|---|---|
| 6449MA | 5/9 Secondary reference Avox Systems Inc Dba Avox Systems Inc |
| 802777-05 | 3/9 Design control — primary reference Avox Systems Inc Dba Avox Systems Inc |
NSN 1660-00-993-5468 is a Valve Assembly,environmental Con, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
Key specifications for 1660-00-993-5468: General Characteristics Item Description: METAL; 1 INCH ON-OFF; OXYGEN; 4.680 IN. NOMINAL OVERALL HEIGHT; 2.680 IN. NOMINAL OVERALL WIDTH IN. 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 1660-00-993-5468 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.