The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-701-5729, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is The Gorman-Rupp Company Div Gorman-Rupp. Government technical data includes 27 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-701-5729 |
| Primary Part Number | 81 1/2D3-E.75 1P |
| Item Name | Pump Unit,centrifugal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | The Gorman-Rupp Company Div Gorman-Rupp |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Phase | SINGLE |
| Intake Connection Type | THREADED INTERNAL |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Pumping Element Operating Position | HORIZONTAL |
| Prime Mover Power Rating | 0.750 HORSEPOWER |
| Unpackaged Unit Length | 9.7 INCHES NOMINAL IN |
| Voltage in Volts | 115.0 |
| Operating Speed at Rated Capacity | 3450.0 REVOLUTIONS PER MINUTE |
| Pump Quantity | 1 |
| Operating Pressure | 34.0 POUNDS PER SQUARE INCH GAUGE (PSIG) NOMINAL POWER DRIVE LBS |
| Unpackaged Unit Width | 7.0 INCHES NOMINAL IN |
| Features Provided | SELF-PRIMING |
| Discharge Connection Thread Size and Series/type Designator | 1.500 NPT |
| Intake Connection Thread Size and Series/type Designator | 1.500 NPT |
| Unpackaged Unit Height | 9.63 INCHES NOMINAL IN |
| Volume Control Type | SERVO MOTOR |
| Discharge Pressure | 4.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING SILICA FUME |
| Maximum Discharge Flow Rate | 75.0 GALLONS PER MINUTE |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | LIQUID |
| Mounting Type | BRACKET |
| Type/model Designation | MODEL 81 |
| Total Head | 55.0 FEET FT |
| 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 |
|---|---|
| 81 1/2D3-E.75 1P PRIMARY | The Gorman-Rupp Company Div Gorman-Rupp (USA) |
NSN 4320-01-701-5729 is a Pump Unit,centrifugal, manufactured by The Gorman-Rupp Company Div Gorman-Rupp, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-701-5729 has 1 manufacturer part number on file: 81 1/2D3-E.75 1P (The Gorman-Rupp Company Div Gorman-Rupp).
Key specifications for 81 1/2D3-E.75 1P: Discharge Connection Quantity: 1; Phase: SINGLE; Intake Connection Type: THREADED INTERNAL; Frequency in Hertz: 60.0. 27 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.