Chromalox Tubular Heaters Accessories Catalog
Tubular Heaters
Customer Bending &
Accessories
Brackets, Discs & Clips
Brackets, Discs and Clips — Various types
of brackets and clips can be fastened to the
heaters to facilitate installation. The following
are typical.
For other brackets to meet your installation
requirements, contact your Local Chromalox
Sales office.
31/32"
1-15/16"
Flange - Support
0.475" Element
5/32"
4-1/2"
3-3/8"
7/16"
Clip-Anchor
3/4"
1-1/2"
4-1/2"
3-3/8"
31/32"
1-15/16"
Flange - Support
0.315" Element
Elements are on
1" Dia. Bolt Circle
Disc
3/4"
1-7/16"
1-1/2" O.D.
Components
Customer Bending
Simple element configurations can be made
easily in the field from stocked tubulars
listed in this catalog. If copper or stainless
sheaths are selected, specify “To be fully
annealed for bending.” Elements can be bent
around any round, smooth surface of the right
diameter.
Three precuations should be observed to
prevent damage to the element:
1. Radius of the round object, around which
the element is bent, should be no smaller
than the minimum radius for the element,
as shown in the table below.
2. Sharp edges of tools should not be
permitted to gouge the element sheath
while bending.
3. End of cold section of the element should
not fall within the bend nor come within
1/4" of either side of the bend. To locate
Customer Bending — Min. Inside Radius (In.)
Sheath
Material
Copper 90
Steel 90
Alloy 90
Degree
of Bend 1/2" 0.475" 0.430" 3/8" 0.375" 0.315" 0.26" 0.246" 0.2"
3-1/2
1-1/2
180
180
180
1. For radii smaller than shown, special processing is required to achieve good life
qualities.ContactyourLocalChromaloxSalesofce.
3-1/2
2-1/2
2-1/2
2-1/2
2-1/2
1-1/2
1-1/2
1-1/2
1-1/2
1-1/2
1-5/16
1-5/16
1-5/16
1-5/16
1-5/16
1-5/16
end of cold section, see dimensions for the
element on its catalog page and determine
as follows:
Example — To locate end of cold section
of TRI-1645 tubular element, refer to
the individual product page.
Sheath length: 16"
Less heated length: 9-1/8"
Total cold length: 6-7/8"
Cold length of each end
(6-7/8" ÷ 2) = 3-7/16"
Terminal end bending can be done with pipe
section of slightly larger diameter than sheath.
A minimum 1" straight section should be left
at the end. Note — To protect sheath, copper
sheet can be bolted to vise jaws and end of
pipe can be filed to remove sharp edge.
Before bending, it is best to lay out and dimension the configuration. Also, it is best to start
bending from the center of the heater and
work toward the terminal ends.
2-5/16
2-5/16
1-7/8
1-7/8
1-7/8
1-7/8
1-1/8
1-1/8
1-1/8
1-1/8
1-1/8
1-1/8
15/16
15/16
15/16
15/16
15/16
15/16
7/8
7/8
7/8
7/8
7/8
7/8
3/4
3/4
3/4
3/4
3/4
3/4
Not Std.
Mat.
in this
Dia.
5/8
5/8
Compression Fittings
Field Installed Compression Fittings — For
0.475, 0.315 and 0.246" diameter elements.
Available in both brass and steel, these fittings
have been tested to 600 psi hydrostatic pressures and may be used in tank walls for liquid
immersion as well as in air ducts and a variety
of other applications.
Compression fittings do not require brazing
and can be field mounted in minutes. They
may be positioned anywhere along the cold
section of the heating element. Do not position
over heated section. Cannot be installed over
terminal Type #26 (Hermetic Seal), and some
other terminals wider than sheath diameter.
Tank Wall
Hex Nut
Washer
Compression Fittings for 0.475, 0.315 and 0.246"
Diameter Elements for Installation in the Field.
Gasket
Thread F
Fitting
Thread G
Compression
Nut
Ferrule
Leave 1" Min.
Straight Section
at Terminal End
1/4
1/4
R
End of Heated Section Must Not Be Within These Two Points
1
Material
Brass
Brass
Brass
Steel
Steel
Steel
ToOrder—Specify PCN, material, element diameter and quantity. Available in pairs only.
1. Available only in brass and steel at this time.
Elem.
Dia.
0.246
0.315
0.475
0.246
0.315
0.475
Terminal End
Dimensions (In.) Thread Size
Mtg. Hole
Dia.
13/32
15/32
21/32
13/32
15/32
21/32
Max. Wall
Thickness
7/32
5/16
5/16
7/32
5/16
5/16
Assembled
Overall
Length F G PCN
1-7/16
1-1/2
2
1-3/4
1-3/4
2-1/8
3/8-24
7/16-28
5/8-24
3/8-24
7/16-28
5/8-24
Bending
1/2-24
1/2-24
3/4-24
1/2-24
1/2-24
3/4-24
144151
144143
144135
143474
143466
143458
A-12
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