| Item Name | Heater Water Gas |
| Federal Supply Group (FSG) | Plumbing Heating and Sanitation Equipment |
| Federal Supply Class (FSC) | 4520 Space And Water Heating Equipment |
| National Item Identification Number (NIIN) | 00-143-9548 (001439548) |
| NCB Code | USA (00) |
| Manufacturer | Federal Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| AMHR | Heating Capacity Per Hour | 34.000 GALLONS |
| AMHX | Temp Rise Per Hour | 100.0 DEG FAHRENHEIT |
| AMKA | Tank Capacity | 50.0 GALLONS |
| AMLL | Water Inlet Connection Thread Size And Series/Type Designator | 3/4-14 NPT |
| AMLQ | Water Inlet Connection Quantity | 1 |
| AMNZ | Gas Connection Thread Size And Series/Type Designator | 1/2 -14 NPT |
| AMPA | Flue Pipe Size | 3.000 INCHES NOMINAL |
| AHGR | Insulated Feature | INCLUDED |
| ADSM | Mounting Position | VERTICAL |
| ZZZT | Nondefinitive Spec/Std Data | 4 TYPE AND B GRADE |
| ALBM | Operating Control Method | AUTOMATIC |
| FEAT | Special Features | W/O FLUE PIPE AND REPAIR PARTS AND MAINTENANCE NOT REQUIRED AND SINGLE COATED GLASS LINING SHALL BE 0.006 TO 0.015 IN. THK. AND DIP TUBE SHALL WITHSTAND 230 DEG F TEMP |
| ZZZX | Departure From Cited Designator | RD BY FEAT |
| AAJJ | Maximum Operating Pressure | 127.5 POUNDS PER SQUARE INCH |
| AAJP | Outside Surface Treatment | ENAMELED |
| AAJQ | Inside Surface Treatment | GLASS, FUSED |
| AENF | Specific Gas For Which Designed | NATURAL GAS |
| MATT | Material | STEEL |
| Relevant Components for NSN - 4520-00-143-9548, 4520001439548 | ||||
| 4510-01-098-5511 (4510010985511) | 4530-00-359-9501 (4530003599501) | 4510-01-104-9967 (4510011049967) | 4520-01-204-0450 (4520012040450) | |
| 4540-00-241-8479 (4540002418479) | 4540-00-929-7357 (4540009297357) | 4530-00-708-5459 (4530007085459) | 4540-01-257-2199 (4540012572199) | |
| 4520-01-319-0705 (4520013190705) | 4520-01-156-0649 (4520011560649) | 4520-01-351-7943 (4520013517943) | 4510-01-301-2015 (4510013012015) | |
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