The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-464-7690, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is March Manufacturing, Inc. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4320-01-464-7690 |
| Primary Part Number | 1A-MD-1/2, 230V |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | March Manufacturing, Inc |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Phase | SINGLE |
| Intake Connection Type | UNTHREADED EXTERNAL |
| Frequency in Hertz | 60.0 |
| Inclosure Type | OPEN |
| Current Type | AC |
| Prime Mover Power Rating | 0.005 HORSEPOWER |
| Unpackaged Unit Length | 2.900 INCHES NOMINAL IN |
| Centrifugal Pump Impeller Quantity | 1 |
| Voltage in Volts | 230.0 |
| Cooling Method | WATER COOLED |
| Prime Mover Quantity | 1 |
| Centrifugal Pump Impeller Suction Type | SINGLE |
| Operating Speed at Rated Capacity | 3200.0 REVOLUTIONS PER MINUTE |
| Pump Quantity | 1 |
| Unpackaged Unit Width | 4.4400 INCHES NOMINAL IN |
| Prime Mover Cooling Medium | AIR |
| Unpackaged Unit Height | 4.220 INCHES NOMINAL IN |
| Stage Quantity | 1 |
| Discharge Pressure | .0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING SILICA FUME |
| Environmental Protection | SUBMERSIBLE |
| Maximum Discharge Flow Rate | 3.0 GALLONS PER MINUTE |
| Discharge Connection Type | UNTHREADED EXTERNAL |
| Intake Connection Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | WATER, FRESH AND ETHYLENE GLYCOL |
| Mounting Type | FLANGE |
| 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 |
|---|---|
| 9325C08-2072-01 | The Entwistle Company Llc (USA) |
| 1A-MD-1/2, 230V PRIMARY | March Manufacturing, Inc (USA) |
| Reference | Meaning |
|---|---|
| 9325C08-2072 | D/9 Drawing number reference only The Entwistle Company Llc |
NSN 4320-01-464-7690 is a Pump Unit,centrifugal, manufactured by March Manufacturing, Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-464-7690 has 2 manufacturer part numbers on file: 9325C08-2072-01 (The Entwistle Company Llc), 1A-MD-1/2, 230V (March Manufacturing, Inc).
Key specifications for 1A-MD-1/2, 230V: Discharge Connection Quantity: 1; Phase: SINGLE; Intake Connection Type: UNTHREADED EXTERNAL; Frequency in Hertz: 60.0. 28 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.