The Valve Assembly,air, cataloged under National Stock Number 2990-00-401-8417, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Hatch & Kirk, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve Assembly,air |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Hatch & Kirk, Inc. (CAGE 55380) |
| Parameter | Value |
|---|---|
| NSN | 2990-00-401-8417 |
| Primary Part Number | 91550290 |
| Item Name | Valve Assembly,air |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Hatch & Kirk, 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 |
|---|---|
| 91550290 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 9155-0290 | 5/9 Secondary reference Energy Services Group Div of Cooper Industries Inc |
| 91550290 | 5/9 Secondary reference Energy Services Group Div of Cooper Industries Inc |
| 91550290 | 5/9 Secondary reference Cooper Machinery Services Llc |
NSN 2990-00-401-8417 is a Valve Assembly,air, manufactured by Hatch & Kirk, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-401-8417 has 1 manufacturer part number on file: 91550290 (Hatch & Kirk, 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.