The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-438-4454, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-438-4454 |
| Primary Part Number | 998F3454 AY 1 |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Intake Connection Type | ROUND FLANGE |
| Pumping Element Operating Position | HORIZONTAL |
| Centrifugal Pump Impeller Quantity | 1 |
| Pump Quantity | 1 |
| Features Provided | SELF-PRIMING |
| Discharge Connection Type | ROUND FLANGE |
| Intake Connection Quantity | 1 |
| Centrifugal Pump Design | MIXED FLOW |
| 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 |
|---|---|
| 994F0112 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 998F3454 AY 1 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 211027493 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 1-CM0S-4 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| 998F3454 | D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-438-4454 is a Pump Unit,centrifugal, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-438-4454 has 4 manufacturer part numbers on file: 994F0112 (Circor Naval Solutions Llc Dba Warren Pumps), 998F3454 AY 1 (Circor Naval Solutions Llc Dba Warren Pumps), 211027493 (Circor Naval Solutions Llc Dba Warren Pumps), 1-CM0S-4 (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for 998F3454 AY 1: Discharge Connection Quantity: 1; Intake Connection Type: ROUND FLANGE; Pumping Element Operating Position: HORIZONTAL; Centrifugal Pump Impeller Quantity: 1. 9 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.