The Pump Unit,rotary, cataloged under National Stock Number 4320-00-494-9741, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-494-9741 |
| Primary Part Number | SG4499 |
| Item Name | Pump Unit,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Phase | THREE |
| Intake Connection Type | ROUND FLANGE |
| Frequency in Hertz | 60.0 |
| Inclosure Type | FULLY INCLOSED |
| Current Type | AC |
| Pumping Element Operating Position | VERTICAL |
| Prime Mover Power Rating | 20.000 HORSEPOWER |
| Voltage in Volts | 440.0 |
| Cooling Method | BLOWER COOLED |
| Prime Mover Quantity | 1 |
| Operating Speed at Rated Capacity | 3500.0 REVOLUTIONS PER MINUTE |
| Pump Quantity | 1 |
| Prime Mover Cooling Medium | AIR |
| Nondefinitive Spec/std Data | 2 TYPE AND M-1 CLASS |
| Discharge Pressure | 00.0 COMPREHENSIVE PROCUREMENT GUIDELINE - VEHICULAR PRODUCTS - REBUILT VEHICULAR PARTS |
| Environmental Protection | SPLASHTIGHT |
| Maximum Discharge Flow Rate | 19.0 GALLONS PER MINUTE |
| Rotary Pump Design | SCREW |
| Discharge Connection Type | ROUND FLANGE |
| Intake Connection Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Current Rating in Amps | 25.3 |
| 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 |
|---|---|
| SG4499 PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| MILP18526 | 4/1 Identification reference U.S. Government activity |
| SG4499 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 4320-00-494-9741 is a Pump Unit,rotary, manufactured by Circor Pumps North America Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-494-9741 has 1 manufacturer part number on file: SG4499 (Circor Pumps North America Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4320-00-841-9733, 4320-01-077-5979. Verify interchangeability with system specifications before substitution.
Key specifications for SG4499: Discharge Connection Quantity: 1; Phase: THREE; Intake Connection Type: ROUND FLANGE; Frequency in Hertz: 60.0. 24 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.