The Pump,rotary, cataloged under National Stock Number 4320-01-312-4099, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-312-4099 |
| Primary Part Number | E-4585 |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| Pumping Element Operating Position | HORIZONTAL |
| Volume Control Type | ROTARY |
| Discharge Pressure | 5.0 COMPREHENSIVE PROCUREMENT GUIDELINE - VEHICULAR PRODUCTS - REBUILT VEHICULAR PARTS |
| Maximum Discharge Flow Rate | 25.0 GALLONS PER MINUTE |
| Rotary Pump Design | VANE |
| Pump Rotation Direction | COUNTERCLOCKWISE |
| 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 |
|---|---|
| E-4585 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| E-4561 PIECE 48 | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| Reference | Meaning |
|---|---|
| E-4561 REV F PC | C/1 Advisory reference — outside the item-of-supply concept Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| E-4561 REV F | D/9 Drawing number reference only Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
NSN 4320-01-312-4099 is a Pump,rotary, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-312-4099 has 2 manufacturer part numbers on file: E-4585 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E-4561 PIECE 48 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-312-8289. Verify interchangeability with system specifications before substitution.
Key specifications for E-4585: Pumping Element Operating Position: HORIZONTAL; Volume Control Type: ROTARY; Discharge Pressure: 5.0 COMPREHENSIVE PROCUREMENT GUIDELINE - VEHICULAR PRODUCTS - REBUILT VEHICULAR PARTS; Maximum Discharge Flow Rate: 25.0 GALLONS PER MINUTE. 6 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.