The Valve,diving Apparatus,rubber Fl, cataloged under National Stock Number 4220-01-601-3491, 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 Circor Aerospace Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Valve,diving Apparatus,rubber Fl |
| FSC / FSG | 4220 — Marine Lifesaving and Diving Equipment (FSG 42) |
| Manufacturers | Circor Aerospace Inc (CAGE 1DRT7) |
| Parameter | Value |
|---|---|
| NSN | 4220-01-601-3491 |
| Primary Part Number | IRK-3 |
| Item Name | Valve,diving Apparatus,rubber Fl |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Circor Aerospace Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| IRK-3 PRIMARY | Circor Aerospace Inc (USA) |
NSN 4220-01-601-3491 is a Valve,diving Apparatus,rubber Fl, manufactured by Circor Aerospace Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-601-3491 has 1 manufacturer part number on file: IRK-3 (Circor Aerospace Inc).
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.