The Pump,rotary, cataloged under National Stock Number 4320-01-437-2825, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Walz and Krenzer Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-437-2825 |
| Primary Part Number | D-WK-492-A71 IT.5 THRU SHAFT |
| Item Name | Pump,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Walz and Krenzer Inc |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Intake Connection Type | THREADED INTERNAL |
| Drive Shaft Length | 10.000 INCHES MINIMUM AND 10.500 INCHES MAXIMUM IN |
| Operating Speed at Rated Capacity | 80.0 REVOLUTIONS PER MINUTE |
| Discharge Connection Thread Size and Series/type Designator | 1.000-11-1/2 NPT |
| Drive Shaft Type | PLAIN ROUND |
| Intake Connection Thread Size and Series/type Designator | 1.000-11-1/2 NPT |
| Discharge Pressure | 00.0 WATER CONSERVING - WATER SAVING TECHNOLOGIES - LOW-FLOW PRE-RINSE SPRAY VALVES |
| Maximum Discharge Flow Rate | 0.85 GALLONS PER MINUTE |
| Drive Shaft End Diameter | 1.000 INCHES NOMINAL IN |
| Rotary Pump Design | GEAR |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Pump Rotation Direction | CLOCKWISE AND COUNTERCLOCKWISE |
| Operation Method | MANUAL |
| 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 |
|---|---|
| D-WK-492-A71 IT.5 THRU SHAFT PRIMARY | Walz and Krenzer Inc (USA) |
| Reference | Meaning |
|---|---|
| D-WK-492-A71 | 5/9 Secondary reference Walz and Krenzer Inc |
| H-12-P-40B1 | 5/1 Secondary reference Concentric Rockford Inc |
| H-12-P-40B1 | 5/9 Secondary reference Walz and Krenzer Inc |
NSN 4320-01-437-2825 is a Pump,rotary, manufactured by Walz and Krenzer Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-437-2825 has 1 manufacturer part number on file: D-WK-492-A71 IT.5 THRU SHAFT (Walz and Krenzer Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4320-01-437-4766, 3040-01-440-4030, 4820-01-442-1880. Verify interchangeability with system specifications before substitution.
Key specifications for D-WK-492-A71 IT.5 THRU SHAFT: Discharge Connection Quantity: 1; Intake Connection Type: THREADED INTERNAL; Drive Shaft Length: 10.000 INCHES MINIMUM AND 10.500 INCHES MAXIMUM IN; Operating Speed at Rated Capacity: 80.0 REVOLUTIONS PER MINUTE. 16 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.