Products
Indirect Line Heaters
Energy Weldfab designs and manufactures indirect line heaters using a “Water Bath” design.
Heat is transferred from a submerged fire-tube wall into a bath fluid, which is then transferred into process coils via convection.
Indirect-fired heater temperatures tend to be lower than other heaters and are atmospheric, with an expansion tank to compensate for changes in bath fluid density with varying bath temperatures.
Process bath heaters have few moving parts, require very little maintenance, and can achieve efficiencies of 70% without using an economizer.
Indirect-fired heaters designed for hazardous area classifications and control system components meet CSA, NFPA, and UL recommendations.
We stock 500,000 through 1,500,000 Btu/Hr Units.
Standard Design
- 6,500 through 15,000 psi coils
- Removable firetube, coil, and smoke stack
- Flame arrestor burner
- Fuel gas manifold with Fisher type 64 regulator, Kimray 112 series fuel valve, main gas block valve, pilot block valve, and 0-200 psi pressure gauge with isolation valve.
- Kimray T-12 temperature controller with separable socket
- 0-250 deg. f. thermometer with thermowell
- 2" drain connection with plug
- Fill hatch with cover
- 1" fuel gas preheat coil
- Fisher type 630 regulator
- Fuel gas scrubber with safety shut-off valve and drain cock
- 125 psi relief valve between Fisher regulator and scrubber
- Long nose adjustable choke
- Concrete foundation blocks
Optional
- High-temperature shut-down
- Stack down-draft diverter
- Bird guards
- Shell insulation with aluminum jacket
- Special well stream coils of required size
- Short nose chokes or fixed orifice chokes
- Special alloy choke trim
- NACE design for sour service
- Skid mounting with separators, including inter-connecting piping and tubing
