8 watts/in2 (1.3 watts/cm2)

Typical Applications: Fuel Oils (Bunker C and Number 6)

Recommended Materials

• Screw Plug: Steel
• Elements: Steel
• Housing: NEMA 1

3-Phase only

15 watts/in2 (2.3 watts/cm2)

Typical Applications: Medium Weight Oils ● Heat Transfer Oils

Recommended Materials

• Screw Plug: Steel
• Elements: Steel
• Housing: NEMA 1

3-Phase and 3-Phase convertible to 1-Phase

16 watts/in2 (2.5 watts/cm2)

Typical Applications: Medium Weight Oils ● Heat Transfer Oils ● Liquid Paraffin

Recommended Materials

• Screw Plug: 304 Stainless Steel
• Elements: Incoloy® 800
• Housing: NEMA 1

3-Phase only

23 watts/in2 (3.6 watts/cm2) (B)

Typical Applications: Forced Air & Gases ● Caustic Solutions ● Degreasing Solutions

Recommended Materials

• Screw Plug: 304 Stainless Steel
• Elements: Incoloy® 800
• Housing: NEMA 1

Dual-Voltage heaters are 1-Phase and are wired for the higher voltage unless otherwise specified.
3-Phase and 3-Phase convertible to 1-Phase

23 watts/in2 (3.6 watts/cm2) (A)

Typical Applications: Lightweight Oils ● Degreasing Solutions ● Heat Transfer Oils

Recommended Materials

• Screw Plug: Steel
• Elements: Steel
• Housing: NEMA 1

Dual-Voltage heaters are 1-Phase and are wired for the higher voltage unless otherwise specified.
3-Phase and 3-Phase convertible to 1-Phase

48 watts/in2 (7.5 watts/cm2)

Typical Applications: Process Water

Recommended Materials

• Screw Plug: 304 Stainless Steel
• Elements: Incoloy® 800
• Housing: NEMA 1

Dual-Voltage heaters are 1-Phase and are wired for the higher voltage unless otherwise specified.
3-Phase and 3-Phase convertible to 1-Phase

60 watts/in2 (9.3 watts/cm2) (A)

Typical Applications: Clean Water

Recommended Materials

• Screw Plug: Brass
• Elements: Copper
• Housing: NEMA 1

Dual-Voltage heaters are 1-Phase and are wired for the higher voltage unless otherwise specified.
3-Phase and 3-Phase convertible to 1-Phase

60 watts/in2 (9.3 watts/cm2) (B)

Typical Applications: Deionized Water ● Demineralized Water

Recommended Materials

• Screw Plug: 316 Stainless Steel
• Elements: 316 Stainless Steel
• Housing: NEMA 1

 3-Phase and 3-Phase convertible to 1-Phase

General Purpose Hot Water Tank Heater

• 1"-111⁄2 NPSM Brass Plug with O-Ring gasket (NPT optional)
• Incoloy® 800 Tubular Element
• 10-32 plated screw terminals
• 90°C epoxy seal standard
• Optional ceramic terminal block for high temperature applications

Self-Contained Screw Plug Heater

Standard Screw Plug Heater

• Four Standard Screw Plug Sizes—1", 1-1/4", 2", 2-1/2"
• Recompacted element bends restore insulation resistance after forming
• Corrosion-Resistant electrical wiring hardware
• Silicone resin element seal standard
• Special sheath materials available
• Special straight bulkhead or European thread fittings available

Incoloy 800

Nickel 30-35%, Chromium 19-23%, Iron balance.

The high nickel content of this alloy contributes to its resistance to scaling and corrosion. Used in air heating and immersion
heating of potable water and other liquids.

316/316L Stainless Steel

Chromium 16-18%, Nickel 11-14%, Iron balance.
(316L - Low Carbon)

Modified with the addition of Molybdenum (2-3%) to improve corrosion resistance in certain environments, especially those which would tend to cause pitting due to the presence of chlorides. Applications include deionized water.

Maximum Sheath Temperature: 1200°F / 649°C

304/304L Stainless Steel

Chromium 18-20%, Nickel 8-11%, Iron balance.
(304L - Low Carbon)

Used in the food industry, medical, and chemical heating.

Maximum Sheath Temperature: 1200°F (649°C)

Copper

Standard Copper Alloy

A low temperature, inexpensive material used mainly for clean water heating.

Maximum Sheath Temperature: 350°F / 177°C

Steel

Low Carbon

Used for high to low viscosity oils, asphalt, tar, wax, molten salt, heat transfer liquid media and other compatible solutions.

Brass Screw Plug

304 SS Screw Plug

316 SS Screw Plug

Steel Screw Plug

Request Other Screw Plug Materials

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.

Electro-Polishing

Passivation

Type 1N Terminal Box

For Use with Thermostat: N/A
For Screw Plug Heater Sizes:

• 1"
• 1-1/4"
• 2"
• 2-1/2"

Type 1T Terminal Box

For Use with Thermostat: Single Pole
For Screw Plug Heater Sizes:

• 1"
• 1-1/4"
• 2"
• 2-1/2"

Type 6T Terminal Box

For Use with Thermostat: Double Pole
For Screw Plug Heater Sizes:

• 1"
• 1-1/4"
• 2"
• 2-1/2"

Type 2N Terminal Box

For Use with Thermostat: N/A
For Screw Plug Heater Sizes:

• 1"
• 1-1/4"
• 2"
• 2-1/2"

Type 2T Terminal Box

For Use with Thermostat: Single Pole
For Screw Plug Heater Sizes:

• 1"
• 1-1/4"

Type 3T Terminal Box

For Use with Thermostat: Double Pole
For Screw Plug Heater Sizes:

• 2"
• 2-1/2"

Type 3N Terminal Box

Alternate Nema 1 Housing

For Use with Thermostat: N/A
For Screw Plug Heater Sizes:

• 1"
• 1-1/4"
• 2"
• 2-1/2"

Type 4N Terminal Box

For Use with Thermostat: N/A
For Screw Plug Heater Sizes:

• 1"
• 1-1/4"
• 2"
• 2-1/2"

Type 4T Terminal Box

For Use with Thermostat: Single Pole
For Screw Plug Heater Sizes:

• 1"
• 1-1/4"

Type 5T Terminal Box

For Use with Thermostat: Single or Double Pole
For Screw Plug Heater Sizes:

• 2"
• 2-1/2"

Screw Terminals No Housing

Request Other Electrical Termination

If your filter selections do not return your desired results from our standard configurations, please continue to Refine Results for your specifications.

When you are finished, save your selections with the Save Results for Quote button (at the right of this page) and choose Request for Quote for further assistance.

DPST Thermostat

SPST Thermostat

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.

Stuffing Box Assembly

Products Temporarily Unavailable for Individual Purchase

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