The Piston and Check,moisture Separa, cataloged under National Stock Number 1650-00-397-6056, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-397-6056 |
| Item Name | Piston and Check,moisture Separa |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| FSC Application Data | MOISTURE SEPARATOR. AIRCRAFT PNEUMATIC SYSTEM |
| General Characteristics Item Description | COMPONENTS,1 PISTON,1 CHECK,1 O RING PACKING,1 BACK UP RING,1 STEEL WASHER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 801442 | 3/9 Design control — primary reference Davey Compressor Co Div of Keco Industries Inc |
| 801442 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
| 801442 | 5/9 Secondary reference Kidde-Fenwal, Llc |
NSN 1650-00-397-6056 is a Piston and Check,moisture Separa, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
Key specifications for 1650-00-397-6056: FSC Application Data: MOISTURE SEPARATOR. AIRCRAFT PNEUMATIC SYSTEM; General Characteristics Item Description: COMPONENTS,1 PISTON,1 CHECK,1 O RING PACKING,1 BACK UP RING,1 STEEL WASHER. 2 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.
NSN 1650-00-397-6056 has DEMIL Code B. 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.