HOTWATT HEATERS Cartridge,Immersion,air, made in USA

 

   128 Maple Street,  Danvers                    
Massachusetts, 01923-2096                     
Hotwatt Telephone Number Tel # (978) 777-0070   Hotwatt Fax Number Fax # (978) 774-2409                  
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HOTWATT PRODUCTS MADE IN USA

Tubular & Finned Tubular Heaters

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DRUM HEATER

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Tubular Heaters:  Screw Plug

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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 Tank Heater

Oil Reservoir Heater

Tank Heater


Copper Sheath

 

1" NPT: Copper Sheath 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. Kilo-
Watts
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" NPT: Copper Sheath

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. Kilo-
Watts
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" NPT: Copper Sheath 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. Kilo-
Watts
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" NPT: Copper Sheath

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. Kilo-
Watts
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" NPT: Copper Sheath 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. Kilo-
Watts

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" NPT: Copper Sheath 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. Kilo-
Watts
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" NPT: Copper Sheath 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. Kilo-
Watts
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" NPT: Steel Sheath 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. Kilo-
Watts
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" NPT: Steel Sheath 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. Kilo-
Watts
Volts
12 1/2"

LS11-12.5-YJ

1.0 120
12 1/2"

LS11-12.5-YJ

1.0 240

 

2" NPT: Steel Sheath 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. Kilo-
Watts
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

 

2 1/2" NPT: Steel Sheath 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. Kilo-
Watts
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

2" NPT: Incoloy Sheath 2" 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. Kilo-
Watts
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


screwplug13.gif (16730 bytes) 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. Kilo-
Watts
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

 

2 1/2" NPT: Incoloy Sheath 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. Kilo-
watts
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

screwplig 14.gif (34240 bytes)

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 (0-100F) or XS-55 (60-250F).

screwplug15.gif (33362 bytes)

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 - 100F)