The Pump Unit,reciprocating, cataloged under National Stock Number 4320-01-491-6509, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Thompson Pump and Manufacturing Company, Inc.. Government technical data includes 23 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. 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 | 4320-01-491-6509 |
| Primary Part Number | A-A-52315 |
| Item Name | Pump Unit,reciprocating |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Thompson Pump and Manufacturing Company, Inc. |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Pumping Element Type | DIAPHRAGM |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | VERTICAL |
| Suction Lift | 10.000 FEET FT |
| Prime Mover Power Rating | 3.5 HORSEPOWER |
| Reciprocating Stroke Type | FIXED |
| Prime Mover Quantity | 1 |
| Operating Speed at Rated Capacity | 60.0 STROKES PER MINUTE |
| Pump Quantity | 1 |
| Pump Reciprocating Design | SINGLE ACTING |
| Control Location | CENTER |
| Discharge Connection Thread Size and Series/type Designator | 4.000-8 NPT |
| Prime Mover Cooling Medium | AIR |
| Intake Connection Thread Size and Series/type Designator | 4.000-8 NPT |
| Volume Control Type | PUSH-PULL |
| Cylinder Quantity | 1 |
| Maximum Discharge Flow Rate | 100.0 GALLONS PER MINUTE |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Prime Mover Type | GASOLINE ENGINE |
| Media for Which Designed | SEWAGE |
| Total Head | 50.000 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 |
|---|---|
| A-A-52315 PRIMARY | Thompson Pump and Manufacturing Company, Inc. (USA) |
NSN 4320-01-491-6509 is a Pump Unit,reciprocating, manufactured by Thompson Pump and Manufacturing Company, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-491-6509 has 1 manufacturer part number on file: A-A-52315 (Thompson Pump and Manufacturing Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-506-9538. Verify interchangeability with system specifications before substitution.
Key specifications for A-A-52315: Discharge Connection Quantity: 1; Pumping Element Type: DIAPHRAGM; Intake Connection Type: THREADED INTERNAL; Pumping Element Operating Position: VERTICAL. 23 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.