The Tank,expansion, cataloged under National Stock Number 4420-01-044-1024, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Sje Inc. Dba San Juan Engineering & Mfg Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-044-1024 |
| Primary Part Number | CS653B2 |
| Item Name | Tank,expansion |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Sje Inc. Dba San Juan Engineering & Mfg Co |
| Status | ACTIVE |
| General Characteristics Item Description | COPPER 24.250 OVERALL LENGTH,WITH AC 7 LB PRESSURE CAP (RC-19FOR HEAT EXCHANGER ASSEMBLY LBS |
| 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 |
|---|---|
| CS653B2 PRIMARY | Sje Inc. Dba San Juan Engineering & Mfg Co (USA) |
| Reference | Meaning |
|---|---|
| 026861 | D/9 Drawing number reference only Sje Inc. Dba San Juan Engineering & Mfg Co |
NSN 4420-01-044-1024 is a Tank,expansion, manufactured by Sje Inc. Dba San Juan Engineering & Mfg Co, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-044-1024 has 1 manufacturer part number on file: CS653B2 (Sje Inc. Dba San Juan Engineering & Mfg Co).
Key specifications for CS653B2: General Characteristics Item Description: COPPER 24.250 OVERALL LENGTH,WITH AC 7 LB PRESSURE CAP (RC-19FOR HEAT EXCHANGER ASSEMBLY LBS. 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.