The Heater,duct Type,portable, cataloged under National Stock Number 4520-00-915-7789, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Engineered Air Systems, Inc. Dba Drs Sustainment Systems. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-915-7789 |
| Primary Part Number | BT400-40-1 |
| Item Name | Heater,duct Type,portable |
| FSC / FSG | 4520 / 45 — No Item Name Available |
| Manufacturer | Engineered Air Systems, Inc. Dba Drs Sustainment Systems |
| Status | ACTIVE |
| Heat Directing Device | ADJUSTABLE LOUVER |
| Prime Mover Type | GASOLINE ENGINE |
| Mounting Type | SKID |
| Quantity | 1 |
| Heat Outlet Quantity | 1 |
| Fuel Feed Method | INTERNAL PUMP |
| Maximum Air Flow Rate | 810.0 CUBIC FEET PER MINUTE |
| Speed Adjustments | SINGLE SPEED |
| Heat Discharge Outlet Type | STATIONARY |
| Air Circulation Device | PROPELLER FAN |
| Ignition Method | ELECTRODE |
| Heating Element Type | COMBUSTION CHAMBER |
| Heat Medium Type | AIR |
| Width | 20.500 INCHES NOMINAL IN |
| Operating Control Type | THERMOSTATIC |
| Inclosure Material | STEEL |
| Fuel Type | 80/87 OCTANE GASOLINE AND 91/96 OCTANE GASOLINE AND 100/130 OCTANE GASOLINE |
| Heat Delivery Rate | 400000.0 BRITISH THERMAL UNIT |
| Integral Fuel Tank Capacity | 21.0 GALLONS |
| Height | 26.000 INCHES NOMINAL IN |
| Circulated Air Type | HEATED |
| Depth | 49.500 INCHES NOMINAL IN |
| Fuel Consumption Rate Per Hour | 4.5 GALLONS |
| Heat Delivery Direction | HORIZONTAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| BT400-40-1 | Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA) |
| BT400-40-1 | Drs Environmental Systems Inc (USA) |
| MILH4607 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 4520-00-915-7789 is a Heater,duct Type,portable, manufactured by Engineered Air Systems, Inc. Dba Drs Sustainment Systems, classified under FSC 4520 (No Item Name Available). Status: active.
NSN 4520-00-915-7789 has 3 cross-referenced part numbers: BT400-40-1 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), BT400-40-1 (Drs Environmental Systems Inc), MILH4607 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 5 known substitutes for 4520-00-915-7789: 4520-00-054-4716, 4520-00-203-0224, 4520-00-223-3221 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for BT400-40-1: Heat Directing Device: ADJUSTABLE LOUVER; Prime Mover Type: GASOLINE ENGINE; Mounting Type: SKID; Quantity: 1. 24 total characteristics are documented in the Federal Logistics Information System.