The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-428-4328, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Oberdorfer Pumps Inc. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4320-01-428-4328 |
| Primary Part Number | 815BS11 T25 |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Oberdorfer Pumps Inc |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Phase | SINGLE |
| Intake Connection Type | THREADED INTERNAL |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Prime Mover Power Rating | 1.5 HORSEPOWER |
| Centrifugal Pump Impeller Quantity | 1 |
| Voltage in Volts | 115.0 AND 230.0 |
| Prime Mover Quantity | 1 |
| Pump Quantity | 1 |
| Discharge Connection Thread Size and Series/type Designator | 1.250-11-1/2 NPT |
| Prime Mover Cooling Medium | AIR |
| Intake Connection Thread Size and Series/type Designator | 1.500-11-1/2 NPT |
| Stage Quantity | 1 |
| Discharge Pressure | 00.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING CENOSPHERES |
| Maximum Discharge Flow Rate | 100.0 GALLONS PER MINUTE |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Operation Relationship Design | SIMULTANEOUS |
| Current Rating in Amps | 9.7 AND 4.85 |
| 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 |
|---|---|
| 815BS11 T25 PRIMARY | Oberdorfer Pumps Inc (USA) |
| Reference | Meaning |
|---|---|
| 815BS-11-T25 | 5/9 Secondary reference Oberdorfer Foundries Inc |
NSN 4320-01-428-4328 is a Pump Unit,centrifugal, manufactured by Oberdorfer Pumps Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-428-4328 has 1 manufacturer part number on file: 815BS11 T25 (Oberdorfer Pumps Inc).
Key specifications for 815BS11 T25: Discharge Connection Quantity: 1; Phase: SINGLE; Intake Connection Type: THREADED INTERNAL; Frequency in Hertz: 60.0. 22 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.