The Shuttle,air Valve,pump, cataloged under National Stock Number 4320-01-177-8555, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Shuttle,air Valve,pump |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls (CAGE 1STQ3) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-177-8555 |
| Primary Part Number | 90522 |
| Item Name | Shuttle,air Valve,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls |
| Status | ACTIVE |
| 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 |
|---|---|
| 90522 PRIMARY | Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls (USA) |
| Reference | Meaning |
|---|---|
| 90522 | 5/9 Secondary reference Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris |
| 90522 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4320-01-177-8555 is a Shuttle,air Valve,pump, manufactured by Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-177-8555 has 1 manufacturer part number on file: 90522 (Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls).
3 possible matches (shared part number, not a government interchangeability claim): 4920-01-297-9752, 6525-01-470-6176, 8465-01-517-4773. Verify interchangeability with system specifications before substitution.
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 4320-01-177-8555 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.