The Valve Diaphragm,air, cataloged under National Stock Number 4220-01-481-3668, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Aerostar International, Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4220-01-481-3668 |
| Primary Part Number | 9012 |
| Item Name | Valve Diaphragm,air |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Aerostar International, Llc |
| 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 |
|---|---|
| 9012 PRIMARY | Aerostar International, Llc (USA) |
| 3666AS104 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| COMO114 | 5/9 Secondary reference Concorde Aerosales Inc. |
| COMO114 | 3/9 Design control — primary reference Amron International Inc |
NSN 4220-01-481-3668 is a Valve Diaphragm,air, manufactured by Aerostar International, Llc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-481-3668 has 2 manufacturer part numbers on file: 9012 (Aerostar International, Llc), 3666AS104 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 9012: Special Features: SUPPORT OF PRE-PROVISIONING ITEMS FOR WHICH NAVICP-PHIL ACTS AS POE. 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.