The Pump,centrifugal, cataloged under National Stock Number 4320-01-280-4091, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-280-4091 |
| Item Name | Pump,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | HORIZONTAL |
| Drive Shaft Length | 3.750 INCHES NOMINAL IN |
| Drive Connection Type | RIGID COUPLED |
| Centrifugal Pump Impeller Quantity | 1 |
| Centrifugal Pump Impeller Suction Type | SINGLE |
| Operating Speed at Rated Capacity | 3500.0 REVOLUTIONS PER MINUTE |
| Discharge Connection Thread Size and Series/type Designator | 2.000-11-1/2 NPT |
| Drive Shaft Type | KEY TYPE, EXTERNAL |
| Intake Connection Thread Size and Series/type Designator | 2.500-8 NPT |
| Stage Quantity | 1 |
| Discharge Pressure | 50.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING CENOSPHERES |
| Maximum Discharge Flow Rate | 250.0 GALLONS PER MINUTE |
| Drive Shaft End Diameter | 1.375 INCHES NOMINAL IN |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Pump Rotation Direction | CLOCKWISE |
| Mounting Type | FRAME |
| 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 |
| Reference | Meaning |
|---|---|
| GNC9-2-8.25 | 3/2 Design control — primary reference U.S. Government activity |
| GNC9-2 | 5/9 Secondary reference U.S. Government activity |
NSN 4320-01-280-4091 is a Pump,centrifugal, classified under FSC 4320, Power and Hand Pumps. Status: active.
Key specifications for 4320-01-280-4091: Discharge Connection Quantity: 1; Intake Connection Type: THREADED INTERNAL; Pumping Element Operating Position: HORIZONTAL; Drive Shaft Length: 3.750 INCHES NOMINAL IN. 20 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.