Finned Tubular Heaters

Straight Finned Tubular Ele U-Shaped Finned Tubular Hea Straight Finned Tubular Ele
Finned tubular heaters


PRODUCT DESCRIPTION

Finned Tubular Heaters are normally used in forced circulation heating of low temperature air, other atmospheres and gases. Typical applications include forced convection heating of air, process atmospheres, and oven atmospheres in duct environments. Steel finned tubular heaters are standard with surface temperatures limited to about 425�C (797�F) compared to 815�C (1500�F) for an alloy sheathed non-finned heater.

Some applications require stainless steel materials for corrosion resistance. The most efficient finned heaters are made with steel sheath and steel fins. Steel is normally used for air heating, stainless steel for atmospheres which are humid or corrosive and monel for salt-laden humid atmospheres. Keep in mind that stainless heaters with stainless fins are very inefficient since the heat transfer rate of stainless is less than one quarter that for steel.

Finned Tubular Heaters offer distinct advantages over open coil heaters: (a) they are safer to operate in that the risk of fire or electrical shock are minimized; (b) they have a much longer service life; and (c) they are more rugged requiring less maintenance than open coil heaters.

We offer a standard carbon steel construction and a high temperature/ corrosion resistant stainless steel construction. As with regular tubular elements, they can be bent to a number of shapes and are available with fittings and mounting brackets as required.

Finned Tubular Heaters | Finned Tubular Elements Finned Tubular Heater Specifications.pdf

Finned Tubular Heaters | Finned Tubular Elements Tubular Heater Bend Formations.pdf

Finned Tubular Heaters | Finned Tubular Elements Electric Tubular Heaters Wiring Diagrams


Typical Applications


Radiant Heating

Convection - Air and Gas

Recirculation Ovens

Finned Tubular Heaters | Finned Tubular Elements Shrink Tunnels

Dryers

Heat Treating

Annealing



Wattage Required to Heat Air Flows:


http://www.nphheaters.com/quote/industrial_process_heaters/wattage_required.pdf



To Order Finned Tubular Heaters Please Specify:


Finned Tubular Heaters | Finned Tubular Elements Element diameter andsheath material

Fin Material

Terminal Type

Total Sheath Length

Finned Tubular Heaters | Finned Tubular Elements Cold Section at Each End

Voltage and Wattage

Bending Configuration Drawings-see link below:

Quantity

Finned Tubular Heaters | Finned Tubular Elements Mounting Characteristics and accessories (if required)

Special Moisture Resistant Seal (if required)

Bending Formation Drawings – See link below:


Bend Formations Below:


NPH Tubular Heater Bend Formations.pdf



How To Order Finned Heaters

 Finned Heater/Tubular Element: 1
Finned Tubular Element:1
 
Figure 1 - 0.315"
kw L part no.
1
2
3
4
5
6
 
19
34
49
64
79
94
 
ASB-301S
ASB-302S
ASB-303S
ASB-304S
ASB-305S
ASB-306S
 

nominal dimensions
F = 5/8"

Figure 1 - 0.430"
kw L part no.
2
3
4
5
6
7
8
27
39
52
64
77
89
102
ASB-402S
ASB-403S
ASB-404S
ASB-405S
ASB-406S
ASB-407S
ASB-408S

nominal dimensions
F = 5/8"

 

U Shaped Copper Sheathed Finned Tubular Element: 2
Finned Tubular Element:2

 
Figure 2 - 0.315"
kw L part no.
1
2
3
4
5
6
 
 
19
16
24
31
39
46
 
 
ASB-301U-A
ASB-302U-A
ASB-303U-A
ASB-304U-A
ASB-305U-A
ASB-306U-A
 
 

nominal dimensions
C = 2 1/2"
F=5/8"
R = 1  9/16"
W = 3 3/8"

Figure 2 - 0.430"
kw L part no.
2
3
4
5
6
7
8
13
20
26
32
38
44
51
ASB-402U-A
ASB-403U-A
ASB-404U-A
ASB-405U-A
ASB-406U-A
ASB-407U-A
ASB-408U-A

nominal dimensions
C = 3"
F=5/8"
R =  2"
W=4"

 W Shaped Incoloy Sheath Finned Tubular Element: 3
Finned Tubular Element:3
 
Figure 3 - 0.315"
kw L part no.
1
2
3
4
5
6
6
10
13
17
20
24
ASB-301W
ASB-302W
ASB-303W
ASB-304W
ASB-305W
ASB-306W

nominal dimensions
A=L-F
C=4½"
F=5/8"
W=5½"

Figure 3 - 0.430"
kw L part no.
2
3
4
5
6
7
8
7
10
14
17
20
23
26
ASB-402W
ASB-403W
ASB-404W
ASB-405W
ASB-406W
ASB-407W
ASB-408W

nominal dimensions
A=L-F
C=6"
F=5/8"
W=7 1/8"

 

Brass Fittings-Finned Tubular Element 4
Finned Tubular Element:4

 
Figure 4 - 0.315"
kw L part no.
1
2
3
4
5
6
 
20.5
35.5
50.5
65.5
80.5
95.5
 
ASB-301SF
ASB-302SF
ASB-303SF
ASB-304SF
ASB-305SF
ASB-306SF
 

nominal dimensions
F=2 1/8"

Figure 4 - 0.430"
kw L part no.
2
3
4
5
6
7
8
28.5
40.5
53.5
65.5
78.5
90.5
103.5
ASB-402SF
ASB-403SF
ASB-404SF
ASB-405SF
ASB-406SF
ASB-407SF
ASB-408SF

nominal dimensions
F=2 1/8"

 

U Shaped, Incoloy Sheath Finned Tubular Element:5
Finned Tubular Element:5

 
Figure 5 - 0.315"
kw L part no.
1
2
3
4
5
6
 
10.5
17.5
25.5
32.5
40.5
47.5
 
ASB-301UF
ASB-302UF
ASB-303UF
ASB-304UF
ASB-305UF
ASB-306UF
 

nominal dimensions
C=1½"
F=2 1/8"
W=2½"

Figure 5 - 0.430"
kw L part no.
2
3
4
5
6
7
8
14.5
21.56
27.5
33.5
39.5
45.5
52.5
ASB-402UF
ASB-403UF
ASB-404UF
ASB-405UF
ASB-406UF
ASB-407UF
ASB-408UF

nominal dimensions
C=2"
F=2 1/8"
W=3 1/8"

 

W Shaped Stainless Steel Sheath & Fins- Finned Tubular Element: 6
Finned Tubular Element:6

 
Figure 6 - 0.315"
kw L part no.
1
2
3
4
5
6
 
7.5
11.5
14.5
18.5
21.5
25.5
 
ASB-301WF
ASB-302WF
ASB-303WF
ASB-304WF
ASB-305WF
ASB-306WF
 

nominal dimensions
A=L-F
C=4½"
F=2 1/8"
W=5"

Figure 6 - 0.430"
kw L part no.
2
3
4
5
6
7
8
8.5
11.5
15.5
18.5
21.5
24.5
27.5
ASB-402WF
ASB-403WF
ASB-404WF
ASB-405WF
ASB-406WF
ASB-407WF
ASB-408WF

nominal dimensions
A=L-F
C=6"
F=2 1/8"
W=7 1/8"

Part Number  
Voltage  
Sheath Material  
Fin Materials & Finishes  
View Finned Tubular Heater Fittings  
Quantity  

 

 

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We Ship Our Industrial Process Heaters To OEM’s & Industry World Wide.

Inquiries & Technical Support

Telephone: 905-859-8225 Facsimile: 905-859-4691

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Toll Free: 1-877-674-9744