TUBULAR & FINNED TUBULAR

 

Tubular heaters SCREW PLUG

Description

UL and C-UL Recognized-E177353

Features
  • Ratings and sizes other than those listed are available.
  • Brass, steel, or stainless steel screw plugs in 1″, 1 1/4″, 2″, and 2 1/2″ sizes.
  • Element supports in multiple element units for proper element spacing as required.
  • Steel, stainless steel, copper, or incoloy sheathed elements.
    One, two or three per unit depending on size.
  • Optional thermostat and well for temperature control.
  • General purpose terminal housing with conduit opening.
    Optional terminal housings for special applications.
  • 120v, 208v, 240v, 480v, single or three phase which are factory wired to your requirements.
  • Long, trouble free service.
  • Made in USA.
Construction
Screw Plug Construction 
  1. Terminal housing, NEMA 1 general purpose, for electrical connections.
  2. Screw plug.
  3. Tubular heating element.
Screw Plug Heater Selection Guide

Application

Solution or
Application

Alkaline or
Acid Content
(Est.% by Volume)

Sheath
Material

Typical
Watt Density
(watts/sq.in.)

Screw
Plug
Material

Water and Very

 


Mild Solutions

Clean Water

pH6 to pH8 Neutral

Copper

45

Brass

Process Water or Very

 


Mild Solutions

pH5 to pH9 2-3%

Incoloy

45

Stainless

 


Steel

Mild Solutions

5-6%

Incoloy

45

Stainless


Steel

Demineralized or



Deionized Water

—

Incoloy

45

Stainless Steel



Stainless Steel

Oil Heating

Low Viscosity Oil

—

Steel

23

Steel

Medium Viscosity Oil

—

Steel

15

Steel

High Viscosity Oil

—

Steel

6

Steel

Specialty Heaters

Process Water


Demineralized Water


Low Viscosity Oil

pH5-pH9


—


—

Incoloy



Incoloy



Incoloy

45

45

23

Brass



Stainless

 


Steel



Steel

Pipe Insert

—

Incoloy

12

Steel

Hot Tubs, Spa

Treated

Incoloy

100

Brass

Commercial Equipment

Clean Water


Clean Water

Incoloy


Copper

30


60

Brass


Brass

*The following oil heaters are catalogued based on low viscosity oil. From medium and high viscosity oils, watt densities must be reduced in accordance with the above watt densities.

Installation

The heater is screwed into a pipe coupling or half coupling in the tank. Units must be immersed at all times for proper operation.

Oil Reservoir Heater

Oil Reservoir Heater

Tank Heater

Tank Heater 
Copper Sheath
Cooper Sheath 1 inch 1 element

1″ NPT: Copper Sheath

No. of Elements: 1

Plug Type: Brass Screw

Watts/sq.in.: Approx. 80

Application: Water

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

5 1/4″

LC9-5.25-X

.35

120

6 3/8″

LC9-6.37-X

.50

120

6 3/8″

LC9-6.37-X

.60

120

6 3/8″

LC9-6.37-X

.75

120

6 3/8″

LC9-6.37-X

.75

240

6 3/8″

LC9-6.37-X

1.0

120

6 3/8″

LC9-6.37-X

1.0

240

8 1/8″

LC9-8.12-X

1.2

120

8 1/8″

LC9-8.12-X

1.2

240

9 1/4″

LC9-9.25-X

1.5

120

9 1/4″

LC9-9.25-X

1.5

240

12 1/4″

LC9-12.25X

2.0

120

1 1/4 inch Copper Sheath 1 element (Fold Back Design)

1 1/4″ NPT: Copper Sheath

No. of Elements: 1 (Fold Back Design)

Plug Type: Brass

Watts/sq.in.: Approx. 80

Application: Water

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

6 1/8″

LC11-6.12-X

1.0

120

6 1/8″

LC11-6.12-X

1.0

240

6 5/8″

LC11-6.62-X

2.0

120

6 5/8″

LC11-6.62-X

2.0

240

8 1/2″

LC11-8.5-X

2.5

120

9 1/16″

LC11-9.06-X

1.5

120

9 1/16″

LC11-9.06-X

1.5

240

10 3/16″

LC11-10.18-X

3.0

240

13 9/16″

LC11-13.56-X

4.0

240

16 15/16″

LC11-16.93-X

5.0

240

1 1/4 Copper Sheath 1 element

1 1/4″ NPT: Copper Sheath

No. of Elements: 1

Plug Type: Brass

Watts/sq.in.: Approx. 45min.-80max.

Application: Water

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

6 1/8″

LC11-6.12-XJ

.60

120

6 1/8″

LC11-6.12-XJ

.60

240

6 1/8″

LC11-6.12-XJ

.75

120

6 1/8″

LC11-6.12-XJ

.75

240

6 1/8″

LC11-6.12-XJ

1.0

120

6 1/8″

LC11-6.12-XJ

1.0

240

1 1/4 Copper Sheath 2 Elements

1 1/4″ NPT: Copper Sheath

No. of Elements: 2

Plug Type: Brass

Watts/sq.in.: Approx. 45min.-80max.

Application: Water

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

6 1/8″

LC11-6.12-YJ

1.0

120

6 1/8″

LC11-6.12-YJ

1.0

240

6 1/8″

LC11-6.12-YJ

1.2

120

6 1/8″

LC11-6.12-YJ

1.2

240

6 1/8″

LC11-6.12-YJ

1.5

120

6 1/8″

LC11-6.12-YJ

1.5

240

6 1/8″

LC11-6.12-YJ

2.0

120

6 1/8″

LC11-6.12-YJ

2.0

240

2 inch Copper Sheath 1 Elements

2″ NPT: Copper Sheath

No. of Elements: 1

Plug Type: Brass Screw

Watts/sq.in.: Approx. 45

Application: Water

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

12″

LC13-12-XJ

1.5

120

12″

LC13-12-XJ

1.5

240

12″

LC13-12-XJ

1.5

480

18″

LC13-18-XJ

2.0

120

18″

LC13-18-XJ

2.0

240

18″

LC13-18-XJ

2.0

480

2 Inch Copper Sheath 2 Elements

2″ NPT: Copper Sheath

No. of Elements: 2

Plug Type: Brass Screw

Watts/sq.in.: Approx. 45

Application: Water

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

7 7/8″

LC13-7.87-YJ

2.0

120

7 7/8″

LC13-7.87-YJ

2.0

240

7 7/8″

LC13-7.87-YJ

2.0

480

9 3/8″

LC13-9.37-YJ

2.5

120

9 3/8″

LC13-9.37-YJ

2.5

240

9 3/8″

LC13-9.37-YJ

2.5

480

12″

LC13-12-YJ

3.0

120

12″

LC13-12-YJ

3.0

240

12″

LC13-12-YJ

3.0

480

18″

LC13-18-YJ

4.0

240

18″

LC13-18-YJ

4.0

480

19 7/8″

LC13-19.87-YJ

5.0

240

19 7/8″

LC13-19.87-YJ

5.0

480

25″

LC13-25-YJ

6.0

240

25″

LC13-25-YJ

6.0

480

28″

LC13-28-YJ

7.0

240

28″

LC13-28-YJ

7.0

480

40 3/8″

LC13-40.37-YJ

10.0

240

40 3/8″

LC13-40.37-YJ

10.0

480

2 1/2 inch Copper Sheath 3 Elements

2 1/2″ NPT: Copper Sheath

No. of Elements: 3

Plug Type: Brass Screw

Watts/sq. in.: Approx. 45

Application: Water

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

Phase

7 3/8″

LC15-7.37-ZJ

3.0

240

1

7 3/8″

LC15-7.37-ZJ

3.0

240

3

7 3/8″

LC15-7.37-ZJ

3.0

480

3

8 7/8″

LC15-8.87-ZJ

3.75

240

1

8 7/8″

LC15-8.87-ZJ

3.75

240

3

8 7/8″

LC15-8.87-ZJ

3.75

480

3

11 3/8″

LC15-11.37-ZJ

4.5

240

1

11 3/8″

LC15-11.37-ZJ

4.5

240

3

11 3/8

LC15-11.37-ZJ

4.5

480

1

11 3/8″

LC15-11.37-ZJ

4.5

480

3

17 3/8″

LC15-17.37-ZJ

6.0

240

1

17 3/8″

LC15-17.37-ZJ

6.0

240

3

17 3/8″

LC15-17.37-ZJ

6.0

480

1

17 3/8″

LC15-17.37-ZJ

6.0

480

3

19 1/8″

LC15-19.12-ZJ

7.5

240

1

19 1/8″

LC15-19.12-ZJ

7.5

240

3

19 1/8″

LC15-19.12-ZJ

7.5

480

1

19 1/8″

LC15-19.12-ZJ

7.5

480

3

24 1/2″

LC15-24.5-ZJ

9.0

240

1

24 1/2″

LC15-24.5-ZJ

9.0

240

3

24 1/2″

LC15-24.5-ZJ

9.0

480

1

24 1/2″

LC15-24.5-ZJ

9.0

480

3

Steel Sheath
1 Inch Steel Sheath 1 Element

1″ NPT: Steel Sheath

No. of Elements: 1

Plug Type: Steel Screw

Watts/sq.in.: Approx. 20

Application:Low Viscosity Oil

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

9 1/2″

LS9-9.5-X

.37

120

9 1/2″

LS9-9.5-X

.37

240

12 1/2″

LS9-12.5-X

.50

120

12 1/2″

LS9-12.5-X

.50

240

18 7/8″

LS9-18.87-X

.80

120

18 7/8″

LS9-18.87-X

.80

240

1 1/4 Steel Sheath 2 Elements

1 1/4″ NPT: Steel Sheath

No. of Elements: 2

Plug Type: Steel

Watts/sq.in.: Approx. 20

Application: Low Viscosity Oil

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

12 1/2″

LS11-12.5-YJ

1.0

120

12 1/2″

LS11-12.5-YJ

1.0

240

6 inch copper flange

2″ NPT: Steel Sheath

No. of Elements: 2

Plug Type: Steel Screw

Watts/sq.in.: Approx. 20

Application: Low Viscosity Oil

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

11 3/4″

LS13-11.75-YJ

1.5

120

11 3/4″

LS13-11.75-YJ

1.5

240

11 3/4″

LS13-11.75-YJ

1.5

480

17 3/4″

LS13-17.75-YJ

2.0

120

17 3/4″

LS13-17.75-YJ

2.0

240

17 3/4″

LS13-17.75-YJ

2.0

480

19 3/4″

LS13-19.75-YJ

2.5

120

19 3/4″

LS13-19.75-YJ

2.5

240

19 3/4″

LS13-19.75-YJ

2.5

480

24 7/8″

LS13-24.87-YJ

3.0

120

24 7/8″

LS13-24.87-YJ

3.0

240

24 7/8″

LS13-24.87-YJ

3.0

480

32 3/4″

LS13-32.75-YJ

4.0

120

32 3/4″

LS13-32.75-YJ

4.0

240

32 3/4″

LS13-32.75-YJ

4.0

480

40 1/4″

LS13-40.25-YJ

5.0

120

40 1/4″

LS13-40.25-YJ

5.0

240

40 1/4″

LS13-40.25-YJ

5.0

480

47 3/4″

LS13-47.75-YJ

6.0

240

47 3/4″

LS13-47.75-YJ

6.0

480

6 inch copper flange

2 1/2″ NPT: Steel Sheath

No. of Elements: 3

Plug Type: Steel Screw

Watts/sq. in.: Approx. 20

Application: Low Viscosity Oil

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

Phase

17 3/8″

LS15-17.37-ZJ

3.0

240

1

17 3/8″

LS15-17.37-ZJ

3.0

240

3

17 3/8″

LS15-17.37-ZJ

3.0

480

1

17 3/8″

LS15-17.37-ZJ

3.0

480

3

19″

LS15-19-ZJ

3.75

240

1

19″

LS15-19-ZJ

3.75

240

3

19″

LS15-19-ZJ

3.75

480

1

19″

LS15-19-ZJ

3.75

480

3

24 1/2″

LS15-24.50-ZJ

4.5

240

1

24 1/2″

LS15-24.50-ZJ

4.5

240

3

24 1/2″

LS15-24.50-ZJ

4.5

480

1

24 1/2″

LS15-24.50-ZJ

4.5

480

3

32 3/8″

LS15-32.37-ZJ

6.0

240

1

32 3/8″

LS15-32.37-ZJ

6.0

240

3

32 3/8″

LS15-32.37-ZJ

6.0

480

1

32 3/8″

LS15-32.37-ZJ

6.0

480

3

40″

LS15-40-ZJ

7.5

240

1

40″

LS15-40-ZJ

7.5

240

3

40″

LS15-40-ZJ

7.5

480

1

40″

LS15-40-ZJ

7.5

480

3

47 3/8″

LS15-47.37-ZJ

9.0

240

1

47 3/8″

LS15-47.37-ZJ

9.0

240

3

47 3/8″

LS15-47.37-ZJ

9.0

480

1

47 3/8″

LS15-47.37-ZJ

9.0

480

3

Incoloy Sheath
6 inch copper flange

″ NPT: Incoloy Sheath

No. of Elements: 1

Plug Type: Stainless Steel Screw

Watts/sq.in.: Approx. 45

Application: Process Water and Very Mild Solution

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

11 1/2″

LA13-11.5-XJ

1.5

120

11 1/2″

LA13-11.5-XJ

1.5

240

17 1/2″

LA13-17.5-XJ

2.0

120

17 1/2″

LA13-17.5-XJ

2.0

240

6 inch copper flange

2″ NPT: Incoloy Sheath

No. of Elements: 2

Plug Type: Stainless Steel Screw

Watts/sq.in.: Approx. 45

Application: Process Water and Very Mild Solution

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

8″

LA13-8-YJ

2.0

240

8″

LA13-8-YJ

2.0

480

9 1/2″

LA13-9.5-YJ

2.5

240

9 1/2″

LA13-9.5-YJ

2.5

480

12″

LA13-12-YJ

3.0

240

12″

LA13-12-YJ

3.0

480

18″

LA13-18-YJ

4.0

240

18″

LA13-12-YJ

4.0

480

19 1/8″

LA13-19.12-YJ

5.0

240

19 1/8″

LA13-19.12-YJ

5.0

480

25 1/4″

LA13-25.25-YJ

6.0

240

25 1/4″

LA13-25.25-YJ

6.0

480

28 1/8″

LA13-28.12-YJ

7.0

240

28 1/8″

LA13-28.12-YJ

7.0

480

40 1/2″

LA13-40.5-YJ

10.0

240

40 1/2″

LA13-40.5-YJ

10.0

480

48″

LA13-48-YJ

12.0

240

48″

LA13-48-YJ

12.0

480

54″

LA13-54-YJ

15.0

240

54″

LA13-54-YJ

15.0

480

6 inch copper flange

2 1/2″ NPT: Incoloy Sheath

No. of Elements: 3

Plug Type: Stainless Steel Screw

Watts/sq.in.: Approx. 45

Application: Process Water and Very Mild Solution

Terminal Enclosure: NEMA 1

A Dim. Imm. Lgth

Cat. No.

Kilowatts

Volts

Phase

7 1/8″

LA15-7.12-ZJ

3.0

240

1

7 1/8″

LA15-7.12-ZJ

3.0

240

3

7 1/8″

LA15-7.12-ZJ

3.0

480

3

11 1/4″

LA15-11.25-ZJ

4.5

240

1

11 1/4″

LA15-11.25-ZJ

4.5

240

3

11 1/4″

LA15-11.25-ZJ

4.5

480

1

11 1/4″

LA15-11.25-ZJ

4.5

480

3

17″

LA15-17-ZJ

6.0

240

1

17″

LA15-17-ZJ

6.0

240

3

17″

LA15-17-ZJ

6.0

480

1

17″

LA15-17-ZJ

6.0

480

3

19″

LA15-19-ZJ

7.5

240

1

19″

LA15-19-ZJ

7.5

240

3

19″

LA15-19-ZJ

7.5

480

1

19″

LA15-19-ZJ

7.5

480

3

24 1/8″

LA15-24.12-ZJ

9.0

240

1

24 1/8″

LA15-24.12-ZJ

9.0

240

3

24 1/8″

LA15-24.12-ZJ

9.0

480

1

24 1/8″

LA15-24.12-ZJ

9.0

480

3

32 1/8″

LA15-32.12-ZJ

12.0

240

1

32 1/8″

LA15-32.12-ZJ

12.0

240

3

32 1/8″

LA15-32.12-ZJ

12.0

480

1

32 1/8″

LA15-32.12-ZJ

12.0

480

3

39 1/2″

LA15-39.5-ZJ

15.0

240

1

39 1/2″

LA15-39.5-ZJ

15.0

240

3

39 1/2″

LA15-39.5-ZJ

15.0

480

1

39 1/2″

LA15-39.5-ZJ

15.0

480

3

47 1/8″

LA15-47.12-ZJ

18.0

240

1

47 1/8″

LA15-47.12-ZJ

18.0

240

3

47 1/8″

LA15-47.12-ZJ

18.0

480

1

47 1/8″

LA15-47.12-ZJ

18.0

480

3

Dimensions

Screw plug and enclosure dimensions shown in proceeding tables may vary.

Special Features

SF-13B: Moisture tight/Explosion resistant terminal enclosure

Special Feature SF-13B

Available on: 1″, 1 1/4″, 2″, 2 1/2″, NPT screw plugs. Enclosure sizes vary with element size.

XS-55: Thermostat control, integral bulb and capillary control with thermowell. Two temperature ranges available. Specify XS-55 (0°-100°F) or XS-55 (60°-250°F).

Special Feature XS-55

Available on: 1 1/4″, 2″, 2 1/2″, NPT screw plugs.
Enclosure sizes vary with element size.

How To Order

Specify: Catalog number, wattage, voltage and special features, if any. Other sizes are available, contact us for more information.

Example: LS13-12.5-YJ/1000W120V/SF13B/XS55 (0° – 100°F)