The Pump Unit,rotary, cataloged under National Stock Number 4320-00-362-4518, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Armstrong Pumps Inc. Government technical data includes 22 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-00-362-4518 |
| Primary Part Number | S25W/1 INCH FLANGE |
| Item Name | Pump Unit,rotary |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Armstrong Pumps Inc |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Phase | SINGLE |
| Intake Connection Type | ROUND FLANGE |
| Frequency in Hertz | 60.0 |
| Inclosure Type | PARTIALLY INCLOSED |
| Current Type | AC |
| Pumping Element Operating Position | HORIZONTAL |
| Prime Mover Power Rating | 0.083 HORSEPOWER |
| Voltage in Volts | 115.0 |
| Prime Mover Quantity | 1 |
| Operating Speed at Rated Capacity | 1750.0 REVOLUTIONS PER MINUTE |
| Pump Quantity | 1 |
| Prime Mover Cooling Medium | AIR |
| Discharge Pressure | 25.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING CENOSPHERES |
| Environmental Protection | DRIPPROOF |
| Maximum Discharge Flow Rate | 31.0 GALLONS PER MINUTE |
| Rotary Pump Design | VANE |
| Discharge Connection Type | ROUND FLANGE |
| Intake Connection Quantity | 1 |
| Prime Mover Type | ELECTRIC MOTOR |
| Media for Which Designed | HYDROCARBON FUELS AND OILS AND WATER, FRESH |
| Total Head | 7.000 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 |
|---|---|
| S25W/1 INCH FLANGE | Armstrong Pumps Inc (USA) |
| Reference | Meaning |
|---|---|
| 100SERIES W/1INCH FLANGE | 5/9 Secondary reference Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div |
| 100 | 5/9 Secondary reference Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div |
| 106189 | 3/9 Design control — primary reference Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div |
| S25W/1INCH FLANGE/BRONZE FITTED | 5/9 Secondary reference Armstrong Pumps Inc |
| S-25W/1INCHFLANGE | 5/9 Secondary reference Armstrong Pumps Inc |
NSN 4320-00-362-4518 is a Pump Unit,rotary, manufactured by Armstrong Pumps Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-362-4518 has 1 manufacturer part number on file: S25W/1 INCH FLANGE (Armstrong Pumps Inc).
4 possible matches (shared part number, not a government interchangeability claim): 4720-01-021-8404, 5365-01-227-9162, 2915-01-377-2140. Verify interchangeability with system specifications before substitution.
Key specifications for S25W/1 INCH FLANGE: Discharge Connection Quantity: 1; Phase: SINGLE; Intake Connection Type: ROUND FLANGE; Frequency in Hertz: 60.0. 22 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.