The Valve,manifold,reduction, cataloged under National Stock Number 4330-01-338-4534, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,manifold,reduction |
| FSC / FSG | 4330 — Centrifugals, Separators, and Pressure and Vacuum Filters (FSG 43) |
| Parameter | Value |
|---|---|
| NSN | 4330-01-338-4534 |
| Item Name | Valve,manifold,reduction |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| 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 |
| Reference | Meaning |
|---|---|
| 9431-04-0000-500 | D/9 Drawing number reference only U.S. Government activity |
| 9431-04-1000-495 | 5/9 Secondary reference U.S. Government activity |
| 9431-04-0000-500 | 5/9 Secondary reference U.S. Government activity |
| 9431-04-1000-495 | 5/9 Secondary reference U.S. Government activity |
| 9431-04-1000 | 5/1 Secondary reference U.S. Government activity |
| 9431-04-1000-495 | 3/2 Design control — primary reference U.S. Government activity |
| 9431-04-0000-500 ITEM 10 | 5/2 Secondary reference U.S. Government activity |
| 9431-04-0000-500 ITEM 10 | 5/9 Secondary reference U.S. Government activity |
| 943-04-1000 | 5/9 Secondary reference U.S. Government activity |
NSN 4330-01-338-4534 is a Valve,manifold,reduction, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-344-3926. 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.
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.