The Heater,duct Type,stationary, cataloged under National Stock Number 4520-01-250-7081, 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 Valad Electric Heating Corp.. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-250-7081 |
| Primary Part Number | EH31-H |
| Item Name | Heater,duct Type,stationary |
| FSC / FSG | 4520 / 45 — No Item Name Available |
| Manufacturer | Valad Electric Heating Corp. |
| Status | ACTIVE |
| Duct Width | 42.000 INCHES IN |
| Frequency in Hertz | 60.0 |
| Specification/standard Data | 81349-MIL-H-22594 GOVERNMENT SPECIFICATION |
| Phase | THREE |
| Height | 15.250 INCHES NOMINAL IN |
| Current Type | AC |
| Width | 51.000 INCHES NOMINAL IN |
| Heat Medium Type | AIR |
| Depth | 8.000 INCHES NOMINAL IN |
| Mounting Type | VENTILATION DUCT |
| Heat Delivery Rate | 172306.0 BRITISH THERMAL UNIT |
| Duct Height | 12.250 INCHES IN |
| Nondefinitive Spec/std Data | 31EH SIZE AND H TYPE |
| Voltage in Volts | 440.0 |
| Heating Element Type | ELECTRIC NONIMMERSION |
| Current Rating in Amps | 114.8 |
| Inclosure Material | STEEL OR STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MIL-H-22594 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 106-056816-000 | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| EH31-H PRIMARY | Valad Electric Heating Corp. (USA) |
| 106-056816-036 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| EH31 | Valad Electric Heating Corp. (USA) |
| TFZ-31H PRIMARY | Indeeco Llc Dba Indeeco (USA) |
NSN 4520-01-250-7081 is a Heater,duct Type,stationary, manufactured by Valad Electric Heating Corp., classified under FSC 4520 (No Item Name Available). Status: active.
NSN 4520-01-250-7081 has 6 cross-referenced part numbers: MIL-H-22594 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 106-056816-000 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), EH31-H (Valad Electric Heating Corp.), 106-056816-036 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), EH31 (Valad Electric Heating Corp.) and 1 more.
There is 1 known substitute for 4520-01-250-7081: 6740-00-543-4252. Verify interchangeability with system specifications before substitution.
Key specifications for EH31-H: Duct Width: 42.000 INCHES IN; Frequency in Hertz: 60.0; Specification/standard Data: 81349-MIL-H-22594 GOVERNMENT SPECIFICATION; Phase: THREE. 18 total characteristics are documented in the Federal Logistics Information System.