The Piston,valve, cataloged under National Stock Number 4810-00-922-9591, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Grindley Manufacturing Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-922-9591 |
| Primary Part Number | 984616 |
| Item Name | Piston,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Grindley Manufacturing Inc. |
| 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 |
|---|---|
| 984616 | Grindley Manufacturing Inc. (USA) |
| Reference | Meaning |
|---|---|
| 247163 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 247163 | 3/9 Design control — primary reference Davey Compressor Co Div of Keco Industries Inc |
| 247163 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 247163 | 5/9 Secondary reference Kidde-Fenwal, Llc |
NSN 4810-00-922-9591 is a Piston,valve, manufactured by Grindley Manufacturing Inc., classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-922-9591 has 1 manufacturer part number on file: 984616 (Grindley Manufacturing Inc.).
Key specifications for 984616: Special Features: DIMENSIONS IN INCHES;0.701 LONG,0.248 DIAMETER;MATERIAL CRES,CONDICTION A,TYPE 303;PASSIVATED;PART OF MOISTURE SEPARATOR ASSEMBLY;FSC APPLICATION DATA:AIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS;; End Item Identification: F-4 AIRCRAFT. 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.