The Heater,fluid,industrial, cataloged under National Stock Number 4420-00-247-6838, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-00-247-6838 |
| Item Name | Heater,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Effective Heat Transfer Surface Area | 68.0 SQUARE FEET |
| Connection Type | FLANGED PIPE HEATED FLUID INLET |
| Connection Type | FLANGED PIPE HEATED FLUID OUTLET |
| Connection Type | SOCKET WELDING CONDENSATE RETURN |
| Connection Type | SOCKET WELDING STEAM INLET |
| Style Designator | PLAIN U-TUBE |
| Tube Quantity | 4 |
| Tube Attachment Method | WELDED BOTH ENDS |
| Tubing Outside Diameter | 1.050 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Nondefinitive Spec/std Data | B TYPE |
| Height | 21.3125 INCHES NOMINAL IN |
| Maximum Steam Working Pressure | ERR-060 |
| Material | STEEL SHELL |
| Material | STEEL TUBES |
| Material | STEEL TUBE SHEET |
| Reference Number Differentiating Characteristics | FOR LH INSTALLATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NYE1914 | 3/9 Design control — primary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| MILH16313 | 4/1 Identification reference U.S. Government activity |
| 55S55-69LHUNIT | 5/2 Secondary reference U.S. Government activity |
NSN 4420-00-247-6838 is a Heater,fluid,industrial, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
Key specifications for 4420-00-247-6838: Heat Transfer Method: INDIRECT; Effective Heat Transfer Surface Area: 68.0 SQUARE FEET; Connection Type: FLANGED PIPE HEATED FLUID INLET; Connection Type: FLANGED PIPE HEATED FLUID OUTLET. 17 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.