The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-01-008-8574, 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. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-008-8574 |
| Item Name | Valve Assembly,environmental Con |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SOURCE CONTROL DRAWING |
| 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 |
|---|---|
| 160C955905-1 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1597T100 | 5/9 Secondary reference U.S. Government activity |
| 1597T100-1 | 3/3 Design control — primary reference U.S. Government activity |
NSN 1660-01-008-8574 is a Valve Assembly,environmental Con, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-008-8574 has 1 manufacturer part number on file: 160C955905-1 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 1660-01-072-3306. Verify interchangeability with system specifications before substitution.
Key specifications for 1660-01-008-8574: Special Features: MANUFACTURERS SUGGESTED NAME IS RAIN REMOVAL REGULATING VALVE; MAJOR COMPONET PARTS ARE: VALVE HOUSING ASSY, VALVE ACTUATOR ASSY, FILTER ASSY, POPPET ASSY, AND SOLENOID ANC CONNECTOR ASSY; End Item Identification: A10 ACFT; T.O. 15A2-1-113 FIG 1; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SOURCE CONTROL DRAWING. 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 1660-01-008-8574 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.