Screw-Plug Heaters

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Screw-Plug Immersion Heaters


PRODUCT DESCRIPTION

A Screw Plug Immersion Heater can have from 1 to 3 elements, or blades, either welded or brazed into the screw plug. Screw plug immersion heaters consist of hairpin bent tubular elements brazed or welded into a screw plug and provided with terminal boxes for electrical connections. Screw plug immersion heaters are screwed directly through a threaded opening in a tank wall or through matching pipe coupling, half coupling or welding flange. Sizes of screw plug heaters are available with 1/2", 3/4" 1", 11/4", 2" and 21/2" pipe threads. A wide selection of screw plug sizes, kilowatt ratings, voltages, sheath materials, terminal housings, and thermostats makes these compact heaters ideal for all types of applications. Screw plug immersion heaters are used for heating liquids and gases in a variety of processes. These heaters are ideal for process water heating and freeze protection. All types of oils and heat transfer solutions can also be heated using these compact easily controlled units. The direct immersion method is energy efficient and well suited for many applications.



Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters Screw Plug Immersion Heaters Specifications.pdf

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters How to Extend the Life of Your Immersion Heaters-2.pdf

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters Screw Plug Immersion_Heaters_Wiring_Diagrams-2.pdf

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters Screw Plug Immersion Heaters-Installation, Operation and Maintenance Instructions.pdf



Screw Plug Immersion Heater - Features:

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters

National pipe thread (NPT) screw into a mating fitting in your tank

Kilowatt range from low to medium (100 watts to 30 kw)

Easy to install into your tank

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters 1" to 2 �" NPT available

Metric and custom screw plugs can be made to match existing tank connections

General purpose terminal enclosure (NEMA 1), weather resistant terminal enclosure
    (NEMA 4), and hazardous location terminal enclosure (NEMA 7), available

Thermocouples, thermostats, and high limit controls can be built-in


Most Common Screw Plugs:

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters Brass, mild steel or 316 series stainless steel

Other materials available

1", 1 �", 1 �", 2', and 2 �" NPT are most common sizes

Other sizes or metric and British thread sizes can be made


Most Common Sheath Material:

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters Copper

Steel

Stainless Steel

Incoloy 800� & Incoloy 840�

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters Inconel 600�

Titanium

Other Sheath Material Also Offered

Incoloy, Inconel are Inco Ltd registered trademarks.


Most Common Terminal Enclosures

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters General Purpose NEMA1

Weather Resistant NEMA 4, NEMA 4X, class 4

Hazardous Location NEMA 7


Built In Thermocouple Options:

"K" calibration thermocouple for high limit sheath protection

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters "J" calibration thermocouple for temperature control

Built In Thermostats:

Power Ratings

Up to 240 volts, 25-amp single pole, single throw (SPST)

Up to 240 volts, 25-amp double pole, single throw (DPST)

Up to 600 volts, 15-amp triple pole, single throw (TPST)


Temperature Ranges

Buy Screw Plug Immersion Heaters | NPT Screw Plug Heaters -16 to 40�C (0-100�F)

10 to 10�C (50-250�F)

70 to 280�C (160-540�F)

160 to 370�C (320-700�F)


Listed below are some of the recommended watt densities to heat various fluids and gases.

(a) 90, 60 & 45 Watts/Square Inch

For industrial water heating of many acqueous solutions which accept heat easily.

(b) 23 Watts/Square Inch

Industrial process heating of many light oils and cooling fluids for some corrosive solutions along with air and gas heating.

(c) 15 & 12 Watts/Square Inch

For industrial heating of medium viscosity oils, high temperature air and gas heating.

(d) 8 Watts/Square Inch

For heating of #5 and #6 fuel oil, viscous materials, raw crude oil and residual oils.

(e) 6 Watts/Square Inch

For heating #6 fuel oil, very viscous materials and fluids that do not accept heat readily.


How To Order Screw Plug Heaters

Screw-Plug Size
"B" Dimension
Immersed length
Sheath Material  
Screw-Plug Material  
Voltage (V)  
Wattage (W) High Limit Thermocouple
Thermostat Thermowell
Enclosure Type Quantity

 

 

First Name Last Name
Company Name Position
Address City/State/Province
Zip/Postal Code Country
Phone Number Fax Number
Toll Free Number Email
Web Site OEM Distributor Process User
Quotation Request Required Delivery Date
have a salesperson contact me

 

 

UL Registered Firm World Wide Shipping CSA US
We Ship Our Industrial Process Heaters To OEM’s & Industry World Wide.

Inquiries & Technical Support

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

[email protected]

Toll Free: 1-877-674-9744