The Ejector,jet, cataloged under National Stock Number 4320-00-142-1729, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Derbyshire Machine & Tool Co. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-142-1729 |
| Primary Part Number | 55S100A |
| Item Name | Ejector,jet |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| Discharge Outlet Quantity | 1 |
| Pressure Inlet Quantity | 1 |
| Jet Quantity | 2 |
| Suction Inlet Quantity | 1 |
| Pressure Inlet Opening Size | 1-1/2 IN. IN |
| Pressure Inlet Type | UNTHREADED FEMALE |
| Nondefinitive Spec/std Data | A TYPE |
| Suction Inlet Pipe/hose Connection Size | 2 IN. N STD IN |
| Discharge Outlet Type | PLAIN FACE FLANGE |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY JET |
| Media for Which Designed | GARBAGE AND WATER |
| Discharge Outlet Pipe/hose Connection Size | 2 IN. N STD IN |
| Suction Inlet Type | PLAIN FACE FLANGE |
| 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 |
|---|---|
| 55S100A PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 375-2IN | C/1 Advisory reference — outside the item-of-supply concept Derbyshire Machine & Tool Co |
NSN 4320-00-142-1729 is a Ejector,jet, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-142-1729 has 1 manufacturer part number on file: 55S100A (Derbyshire Machine & Tool Co).
Key specifications for 55S100A: Discharge Outlet Quantity: 1; Pressure Inlet Quantity: 1; Jet Quantity: 2; Suction Inlet Quantity: 1. 14 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.