The Heater,fluid,industrial, cataloged under National Stock Number 4420-01-309-4175, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-309-4175 |
| Item Name | Heater,fluid,industrial |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Status | ACTIVE |
| Heat Transfer Method | INDIRECT |
| Length | 62.375 INCHES NOMINAL IN |
| Effective Heat Transfer Surface Area | 35.0 SQUARE FEET |
| Connection Type | THREADED INTERNAL PIPE HEATING FLUID INLET |
| Connection Type | THREADED INTERNAL PIPE HEATING FLUID OUTLET |
| Connection Type | THREADED INTERNAL PIPE STEAM INLET |
| Style Designator | COILED PLAIN TYPE |
| Diameter | 17.000 INCHES NOMINAL IN |
| Features Provided | TEMPERATURE REGULATING VALVE |
| Connection Nominal Diameter | 1.250 INCHES HEATING FLUID INLET IN |
| Connection Nominal Diameter | 2.000 INCHES STEAM INLET IN |
| Connection Nominal Diameter | 2.500 INCHES HEATING FLUID OUTLET IN |
| Specification/standard Data | 81349-MIL-H-22881 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | B CLASS AND 1 TYPE |
| Height | 17.000 INCHES NOMINAL IN |
| Capacity Rating | 1750.0 GALLONS PER HOUR |
| Maximum Steam Working Pressure | ERR-060 |
| Material | COPPER TUBES |
| Material | STEEL CORROSION RESISTING SHELL |
| 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 |
|---|---|
| SD-A-016-55-SW1B07-110421 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4420-01-309-4175 is a Heater,fluid,industrial, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
Key specifications for 4420-01-309-4175: Heat Transfer Method: INDIRECT; Length: 62.375 INCHES NOMINAL IN; Effective Heat Transfer Surface Area: 35.0 SQUARE FEET; Connection Type: THREADED INTERNAL PIPE HEATING FLUID INLET. 19 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.