NSN 1660-01-640-7650 · NIIN 016407650 · Part number 2203800-5SR2
Honeywell International Inc. Div Aerospace - Torrance · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 70210
Government record, cited
NSN 1660-01-640-7650 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-640-7650. Manufacturer of record part number: 2203800-5SR2.
Also searched as1660-01-640-7650 ·
1660016407650 ·
NIIN 016407650 ·
01-640-7650 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 70210 · 2203800-5SR2
Nearby stock numbers← 1660-01-640-7649 Heat Exchanger, Air to Air, Aircra
·
1660-01-640-8497 Heating Blanket, Electrical →
Features
Valve Assembly,environmental Con — FSC 1660
1 manufacturer part number on file
Manufacturer of record: Honeywell International Inc. Div Aerospace - Torrance
Identification
NSN: 1660-01-640-7650
NIIN: 016407650
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 2203800-5SR2
Manufacturer: Honeywell International Inc. Div Aerospace - Torrance
General Description
The Valve Assembly,environmental Con, cataloged under National Stock Number 1660-01-640-7650, 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 Honeywell International Inc. Div Aerospace - Torrance. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-01-640-7650
Primary Part Number
2203800-5SR2
Item Name
Valve Assembly,environmental Con
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Honeywell International Inc. Div Aerospace - Torrance
Honeywell International Inc. Div Aerospace - Torrance (USA)
No interchangeability data on file.
Other items in FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1660-00-006-4472
FLANGE,VALVE BODY
1660-00-009-5646
ADAPTER ASSEMBLY,BELLOWS
1660-00-019-8389
1660-00-019-8389 · Item name not on file
1660-00-019-8399
1660-00-019-8399 · Item name not on file
1660-00-031-5285
1660-00-031-5285 · Item name not on file
1660-00-302-4390
PISTON,REGULATING V
1660-00-441-0575
PISTON
1660-01-601-0729
ETHERNET SWITCH
Frequently Asked Questions
What is NSN 1660-01-640-7650?
NSN 1660-01-640-7650 is a Valve Assembly,environmental Con, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-01-640-7650?
NSN 1660-01-640-7650 has 1 manufacturer part number on file: 2203800-5SR2 (Honeywell International Inc. Div Aerospace - Torrance).
What are the specifications of 2203800-5SR2?
Key specifications for 2203800-5SR2: Part Name Assigned by Controlling Agency: ENVIRONMENTAL CONTROL UNIT; End Item Identification: ATR-72 AIRCRAFT. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1660-01-640-7650 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.