The Boiler,heating,low Pressure, cataloged under National Stock Number 4520-00-425-5879, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-425-5879 |
| Item Name | Boiler,heating,low Pressure |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Unable to Decode | UNABLE TO DECODE |
| Firing Type | OIL |
| Overall Diameter | 40.750 INCHES NOMINAL IN |
| Horsepower Rating | 23.7 |
| Oil for Which Designed | 2 |
| Boiler Type | VERTICAL FIRE TUBE |
| Jacket Inclosure Feature | INCLUDED |
| Heat Delivery Rate in Btu Per Hour | 792.0 |
| 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 |
|---|---|
| K890WC | 5/9 Secondary reference Dcx-Chol Enterprises, Inc. |
| K890WC | 3/9 Design control — primary reference Aldrico, Inc. Dba Aldrich Company |
| K890W | 5/9 Secondary reference Aldrico, Inc. Dba Aldrich Company |
| K890 | 5/9 Secondary reference Aldrico, Inc. Dba Aldrich Company |
NSN 4520-00-425-5879 is a Boiler,heating,low Pressure, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 1015-01-285-0139, 4520-01-326-9197. Verify interchangeability with system specifications before substitution.
Key specifications for 4520-00-425-5879: Overall Height: 69.500 INCHES NOMINAL IN; Unable to Decode: UNABLE TO DECODE; Firing Type: OIL; Overall Diameter: 40.750 INCHES NOMINAL IN. 8 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.