The Deflector,dirt and Liquid, cataloged under National Stock Number 4320-01-423-3439, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-423-3439 |
| Item Name | Deflector,dirt and Liquid |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Outside Diameter | 6.000 INCHES NOMINAL IN |
| Inside Diameter | 4.000 INCHES NOMINAL IN |
| Width | 0.375 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NA1628 | D/9 Drawing number reference only U.S. Government activity |
| NA1801 | D/9 Drawing number reference only U.S. Government activity |
| PL.8SCO-2 ITEM 18B | 5/2 Secondary reference U.S. Government activity |
| 18-0113-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4320-01-423-3439 is a Deflector,dirt and Liquid, classified under FSC 4320, Power and Hand Pumps. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4320-01-423-4348, 4320-01-423-4350, 4320-01-423-4426. Verify interchangeability with system specifications before substitution.
Key specifications for 4320-01-423-3439: Outside Diameter: 6.000 INCHES NOMINAL IN; Inside Diameter: 4.000 INCHES NOMINAL IN; Special Features: MATERIAL PER ASTM B584,ALLOY 903; USED ON BUFFALO PUMP MODEL 8 SCO CENTRIFUGAL PUMP; Width: 0.375 INCHES NOMINAL IN. 4 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.