The Preheater Assembly, cataloged under National Stock Number 4540-01-148-2838, is classified within Federal Supply Class 4540 (Waste Disposal Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4540-01-148-2838 |
| Primary Part Number | 652-07508-000 |
| Item Name | Preheater Assembly |
| FSC / FSG | 4540 / 45 — Waste Disposal Equipment |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF SHELL ASSEMBLY,SHELL ASSEMBLY TEMPERATURE CONTROL,IMMERSION HEATER,TEMPERATURE SWITCH,UNION-BRONZE,480 VOLTS |
| 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 |
|---|---|
| 652-07508-000 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 652-7508 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 652-07508-000 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
NSN 4540-01-148-2838 is a Preheater Assembly, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4540, Waste Disposal Equipment. Status: active.
NSN 4540-01-148-2838 has 1 manufacturer part number on file: 652-07508-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
Key specifications for 652-07508-000: General Characteristics Item Description: CONSISTS OF SHELL ASSEMBLY,SHELL ASSEMBLY TEMPERATURE CONTROL,IMMERSION HEATER,TEMPERATURE SWITCH,UNION-BRONZE,480 VOLTS; End Item Identification: MODEL S375EM. 1 specification is 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.