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Flanged Aluminum Finned Immersion Heaters
- 3″- 150 lb rated 7 1/2″ OD Aluminum Flange and Gasket
- 2-7/8″ OD Finned body designed for 3″ Schedule 40 pipe
- 2″OD × 5″ long un-finned area under flange for fluid inlet
- 1/4-20 threaded studs for secure connections to power supply
- Flange mates to standard 3″ CHF Circulation Heater pipe body
- Single- or three-phase designs from 120V to 600V maximum
- 3″ — 300 lb & 600 lb rated Aluminum mounting flanges
- Optional internal overtemperature type K or J thermocouple sensor in heated zone. 24″ pigtail leads standard in housing. (700°F maximum controller setting)
- Alternate size ASA style Flanges – 3-1/2″ & 4″ in 150 lb ratings
- Round, rectangular/square non-pressure rated Aluminum mounting flanges.
- 3″ or 4″ size cast aluminum screw plug mounting in place of flange
- Finned area watt densities 4 -16 for oil/organic fluids
- External power wiring options including armored cable, braided or plain lead wire
Electrical Terminations
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Type 1N Terminal Box
NEMA 1 rating For heaters having no thermostat Supplied with all Preconfigured and Stock Heaters All flange sizes See Learn More for flange sizes and measurements
Type 2N Terminal Box
NEMA 4 rating For heaters having no thermostat 3 inch flanges Requires the use of the cover gasket
Type 3N Terminal Box
NEMA 4 rating For heaters having no thermostat 4 and 5 inch flanges Requires the use of the cover gasket
Type 4N Terminal Box
NEMA 4 rating For heaters having no thermostat 6 through 14 inch flanges See Learn More for flange sizes and measurements
Thermostats
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DPST Thermostat
Double Pole – Single Throw Thermostats: Style B, Style C
SPST Thermostat
Single Pole – Single Throw Thermostats: Style A, Style D, Style F
Request Other Thermostat
If your filter selections do not return your desired results from our standard configurations, please continue to select your Specifications. When you are finished, save your selections in the Wish List (using the button at the right of this page) and follow the steps to submit them to Tempco.
Thermostat Options
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Stuffing Box Assembly
The Stuffing Box Assembly is used to seal the thermostat capillary when the sensing bulb (3/8″ max. OD) is immersed directly in a liquid rather than in a thermowell. The Stuffing Box consists of six slotted washers used to compress a graphite packing into a 3/8″ NPT male pipe thread fitting. Assembly Instructions Feed sensing bulb through hole in upper and lower fitting. Insert washers and packing into top cavity of lower fitting. Upper fitting then screws into lower fitting, creating the seal. Part Number: TST-109-101
Thermowells
Stainless Steel or Plain Steel: Thermowells provide protection for bulb and capillary sensors. They are supplied with a 1/2″ NPT male thread for mounting and a 3/8″ NPT internal thread that can be used with the stuffing box assembly to secure the capillary to the well. ID: 0.50″, OD: 0.56
Heater Options
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Flow Control Baffles
For flange heaters used in circulation tanks, to aid heat transfer by forcing the liquid or gas back and forth across the elements. Baffles can be custom designed and positioned for your application.
Terminal Housing Standoff
The electrical housing is separated from the flange by an air gap (six-inch standard) to lower the ambient temperature of the electrical wiring. This option is used on flanged immersion heaters where the flange temperature exceeds 482°F (250°C).
