Open Coil & Special Air Heaters

Need a reliable Air Heater of a special design? We specialize in low to moderate volume runs of specialized air heaters. These heaters are made from the finest Nickel Chrome wire. The coils are combined with the proper mica or ceramic carrier supports in a stainless steel or aluminum frame as determined by temperature. All electrical connections are high quality screw and nut with ceramic bushings. Heaters can also be supplied with thermostats, thermo cut outs, and other protective and control devices. Resistance and Hypot are carefully monitored for proper performance.

  • Nickel Chromium Wire
  • High Temperature Mica
  • Stainless Steel or Aluminum Frame (as required)
  • Thermal Fuses, Thermostats, High Limit Cut outs Available
  • Special Flanges and Fittings as Needed
  • Ceramic Carrier
  • Wattages from 25 to 5000 (Higher Wattages may be feasible depending on SCFM).
  • Voltages from 24 to 240 (480 on some special designs)
  • Single Phase, Three Phase, Dual Wattage and Voltage available.

Special Air Heaters - Maximum Flow

Maximum Flow Air Heater

High Volume - Moderate Temperature

This Maximum Flow Air Heater design is encased within a 2 3/8"O.D. tube with a cross frame heating element for minimum resistance to airflow. It has a practical operating range of up to 200 CFM with temperatures up to 600°F (315°C).

  • Supplied with: Type SF3 terminals.
  • Type SF13A enclosure.
  • Standard Entry Flange

Standard items listed below.

Length Cat. No. Dia. Wattage Voltage Watts/Inch Weight Terminals
6" MFA-6F-1 2 3/8" 600 120 150 .05 S&N w/enclosure
10" MFA-10F-1 2 3/8" 1000 120 125 1.25 S&N w/enclosure
12" MFA-12F-2 2 3/8" 375 120 38 1.50 S&N w/enclosure
12" MFA-12F-2 2 3/8" 1500 240 150 1.50 S&N w/enclosure
14" MFA-14F-2 2 3/8" 500 120 42 1.75 S&N w/enclosure
14" MFA-14F-2 2 3/8" 2000 240 166 1.75 S&N w/enclosure

Special Air Heaters - Heavy Duty

Heavy Duty Air Heater

Moderate Volume - High Temperature

This heavy-duty heater design is for continuous high temperature operations up to 1200°F (650°C), while supplying a good flow rate up to 50 CFM. This heater is suited for vacuum and pressure environments, as well as other applications where heavy-duty construction is desirable. This unit is enclosed in 2" schedule 40 S.T. S.T. pipe.

Length Cat. No. Dia. Wattage Voltage Watts/Inch Weight Terminals
12"
12"
24"
24"
HDA-2-12
HDA-2-12-2
HDA-2-24
HDA-2-24-2
2 3/8"
2 3/8"
2 3/8"
2 3/8"
375
1500
750
3000
120
240
120
240
158
158
140
140
7.0
7.0
12.5
12.5
S&N w/enclosure
S&N w/enclosure
S&N w/enclosure
S&N w/enclosure

Special Air Heaters - Standard

Standard Air Heater

Moderate Heat - Moderate Volume

  • Standard pressure rating 80 PSIG at room temperature
  • Add "F" to catalog listing number for standard fitting
  • May be used with recirculating air up to 250°F
  • Heated air to 1000°F
Length Cat. No. Dia. Wattage Voltage Watts/Inch Weight Leads Fittings
4"
4"
4"
4"
4"
4"
5"
5"
5"
5"
5"
5"
6"
6"
6"
6"
6"
6"
SAH37-4-2
SAH37-4MF-2
SAH37-4-1
SAH37-4MF-1
SAH37-4-2
SAH37-4MF-2
SAH50-5-2
SAH50-5MF-2
SAH50-5-1
SAH50-5MF-1
SAH50-5-2
SAH50-5MF-2
SAH75-6-2
SAH75-6MF-2
SAH75-6-1
SAH75-6MF-1
SAH75-6-2
SAH75-6MF-2
3/8"
3/8"
3/8"
3/8"
3/8"
3/8"
1/2"
1/2"
1/2"
1/2"
1/2"
1/2"
3/4"
3/4"
3/4"
3/4"
3/4"
3/4"
50
50
200
200
200
200
100
100
400
400
400
400
190
190
750
750
750
750
120
120
120
120
240
240
120
120
120
120
240
240
120
120
120
120
240
240
14
14
57
57
57
57
22
22
88
88
88
88
34
34
136
136
136
136
.12
.18
.12
.18
.12
.18
.18
.25
.18
.25
.18
.25
.43
.68
.43
.68
.43
.68
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
12"
1/4"NPT
1/4"NPT
1/4"NPT
1/4"NPT
1/4"NPT
1/4"NPT
3/8"NPT
3/8"NPT
3/8"NPT
3/8"NPT
3/8"NPT
3/8"NPT
3/8"NPT
3/4"NPT
3/4"NPT
3/4"NPT
3/4"NPT
3/4"NPT

Special Air Heaters - Pure Flow

Pure Flow Air Heater

High Volume - High Heat

A typical pure flow system with limits and contols. This ST. ST. heater produces pure flow qualities by not allowing the air or gas to pass directly over the resistance wire, ceramics or mica. It is suitable for LN2 liquids, pressures up to 100 psi, temperatures up to 800°F (430°C), very popular in laboratory and semi-conductor applications.

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