Watlow Electric CAST-X 500 User Manual

C A S T- X 5 0 0 CI R C U L ATI O N HE ATE R S

Safe Circulation
Heater Ideal for
Contamination-Free
Gas and Liquid
Heating

The new CAST-X 500 from Watlow®is a small, lightweight
circulation heater ideal for heating gas or liquids in
demanding applications. Even in its compact size, the
CAST-X 500 is extremely powerful with operating
temperatures up to 350°F (177°C) and working fluid
pressure up to 3000psi. The CAST-X 500 heater is
available in a variety of wattages and can be shipped in
just a few days.

The CAST-X 500 heater is constructed of a helical coiled
tube cast into an aluminum body with a replaceable cartridge
heater installed in the center. The cartridge heater can be
replaced with various wattages to suit your equipment’s
changing requirements.

The aluminum body serves as the heat transfer media
between the cartridge heater and the coiled tube where
the fluid is being heated. The aluminum mass acts as a
“thermal flywheel” and ensures accurate temperature control
of the fluid to prevent degradation.

The unique, non-weld construction of the CAST-X 500 allows
it to be used where thermally sensitive materials are being
heated such as paints, resins and flammable materials.
The heater is suited for applications where fluid cleanliness
is critical, because the material being heated never comes in
contact with the heater. This is a performance requirement in
foodservice, semiconductor and analytical industries.

Applications

• Solvent heating

• Air, CO

• DI water heating

• Packaging sterilization

• Hydrogen peroxide vaporization

• Analytical instrumentation

• Sample heating

• Foodservice

• Steam generation

• Glycol heating for CIP systems

• Pasteurization

• Printing ink heating

• Diesel and fuel heating

and nitrogen heating

2

Features and Benefits

Fluid path constructed independent from heater sheath

• Assures an intrinsically safe thermal solution

• Prevents fluid contamination upon heater failure

• Heats sensitive materials safely because the material

heated does not come in contact with heating elements

Robust cast-in aluminum construction

• Assures longer heater life

• Offers accurate temperature control

Non-welded construction

• Minimizes potential leakage

• Offers an economical priced package

• Provides high pressure operation to 3000 psi

• Self draining when mounted vertically

Standard stainless steel fluid path

•

Assures material compatibility with many different materials

Replaceable cartridge heater

• Offers low cost of ownership due to ability to replace

heater in field

• Assures faster delivery and customization from factory

Compact size

• Assures quick response due to low mass (2.375 lbs)

• Saves real estate in equipment because of small footprint

BAT-CX500-0807

Watlow®is a registered trademark of Watlow Electric Manufacturing Company.

To be automatically connected to the nearest North American Technical Sales Office:

1-800-WATLOW2 • www.watlow.com • [e-mail]

International Technical Sales Offices: Australia, [phone] • China, [phone] • France, [phone] •

Germany, [phone] • Italy, [phone] • Japan, [phone] • Korea, [phone] • Malaysia, [phone] •
Mexico, [phone] • Shanghai, [phone] • Singapore, [phone] • Spain, [phone] • Sweden, [phone] •
Taiwan, [phone] • United Kingdom, [phone]

© 2007 Watlow Electric Manufacturing Company

Specifications

• (4) 10-323⁄8 (10 mm) in. deep mounting holes

1

•

⁄4 in. (6.35 mm) 316 SS tubing

• 0.028 in. (0.710 mm) wall

• 84 in. (213.36 cm) long

• Process temperatures to 350°F (177°C)

• Up to 1500 W

Options

• Single phase operation to 240V

• NEMA 1, 4 or 7 housings with and without sensors.

• Passivated or electropolished wetted surfaces

• Insulated body up to 400°F (204°C) operation

Dimensions

NEMA 1 and 4

5.07 in.

(129 mm)

4 in.

(113 mm)

2.03 in.

(52 mm)

0.5 in.

(13 mm)

NEMA 7

4.17 in.

(106 mm)

Ø2.50 in.

(64 mm)

Ø1.25 in.

(31.75 mm)

(2X)

0.5 in. NPT
(13 mm)

No Enclosure

0.313 in.
(8 mm)

5.75 in.

(146 mm)

0.74 in. T/C
(19 mm)

0.63 in. HTR
(16 mm)

4.75 in.

(121 mm)

3.43 in.

(87 mm)

0.5 in.

(13 mm)

6.43 in.

(163 mm)

1.3 in.

(33 mm)

0.81 in.

(21 mm)

2.30 in.

(58 mm)

Ordering Information

To order, complete the code number to the right with the
information below.

W X 6 E 2 A - _ _ _ _ - _ _ _ _

Base Circulation Heater

0.25 in. O.D. (6.35 mm), 0.028 in. wall (0.71 mm),
316 SS tubing with
heater with 36 in. (914 mm) Teflon
No housing

Heater Wattage

300A = 120V, 300 W
300B = 120V, 1500 W
300C = 240V, 300 W
300D = 240V, 500 W
300E = 240V, 750 W
300F = 240V, 1000 W
300G = 240V, 1200 W
300H = 240V, 1500 W
300J = 208V, 1125 W
300K = 208V, 900 W
300L = 208V, 750 W
300M = 208V, 565 W

Enclosures and Sensors

00 = No sensor or enclosure
0J = Type J T/C in casting, no housing
0K = Type K T/C in casting, no housing
S0 = NEMA 1 housing, no sensor
SJ =

NEMA 1 housing with Type J sensor in casting

SK =

NEMA 1 housing with Type K sensor in casting

W0 =

NEMA 4 housing, no sensor

WJ =

NEMA 4 housing with Type J sensor in casting

WK =

NEMA 4 housing with Type K sensor in casting

E0 =

NEMA 7 housing, no t-stat, no sensor

EJ =

NEMA 7 housing with Type J sensor in heater,
non standard delivery

EK =

NEMA 7 housing with Type K sensor in heater,
non standard delivery

High Limits (Only available with no housing option)

00 = None
01 = Snap action high limit set at 260˚F (127°C)
02 = Snap action high limit set at 500˚F (260°C)

Accessories

Pair high pressure compression fitting - 274-55-6-1
Insulation jacket - 307-0-12-1, maximum temperature
400°F (204°C)

Application Guidelines

Maximum process temperature 350°F (177°C)
Maximum water flow rate is 0.75 GPM
Consult factory for gas applications

Teflon®is a registered trademark of E.I. du Pont de Nemours & Company.

1.19 in.

(30 mm)

1.38 in.

(35 mm)

5

⁄8in. (16 mm) dia. cartridge

2.44 in.

(62 mm)

(6X) 10-32

0.63 in.

(16 mm)

1.25 in.

(32 mm)

®

leads.

0.38 in.

(10 mm)

Ø2 in.

(51 mm)

1.13 in.

(29 mm)