The Pump Unit,rotary, cataloged under National Stock Number 4320-01-147-2550, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-147-2550 |
| Item Name | Pump Unit,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Intake Connection Type | ROUND FLANGE |
| Pumping Element Operating Position | HORIZONTAL |
| Operating Speed at Rated Capacity | 500.0 REVOLUTIONS PER MINUTE |
| Pump Quantity | 1 |
| Discharge Pressure | 0.0 LIGHT COMMERCIAL HEATING AND COOLING - ENERGY STAR-HEATING AND COOLING - ENERGY EFFICIENT PRODUCTS |
| Maximum Discharge Flow Rate | 100.0 GALLONS PER MINUTE |
| Discharge Connection Type | ROUND FLANGE |
| Intake Connection Quantity | 1 |
| Mounting Type | BASE |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SPECIAL FEATURES |
| 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 |
|---|---|
| BXL2-1-2NFB-NHRB | 3/1 Design control — primary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
NSN 4320-01-147-2550 is a Pump Unit,rotary, classified under FSC 4320, Power and Hand Pumps. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4320-01-278-1031. Verify interchangeability with system specifications before substitution.
Key specifications for 4320-01-147-2550: Discharge Connection Quantity: 1; Intake Connection Type: ROUND FLANGE; Pumping Element Operating Position: HORIZONTAL; Operating Speed at Rated Capacity: 500.0 REVOLUTIONS PER MINUTE. 11 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.