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Circulation Heaters In-Line Heaters Guide:

Circulation Heaters -Ordering Requirements Image               Circulation Heater with Adjustable Thermostat                         
                  Circulation/Inline Heaters-Components                     Circulation Heaters, Re-Circulation Heaters                             

CIRCULATION HEATERS PRODUCT DESCRIPTION GUIDE:

Circulation heaters, also referred to as in-line or re-circulation heaters are used for heating flowing liquids and gases.  Non-pressurized or highly pressurized fluids can be heated very effectively using either direct or indirect circulation heating.  A wide variety of standard designs and custom engineered power ratings, sizes, flow capacities and options are available to fulfill most any application needs.
 
NPH circulation heaters feature all-welded construction of the steel shroud and flanges, hydrostatically pressure-tested ports, heavy-duty metal-sheathed heating elements of Incoloy or steel, galvanized or carbon steel containment pipe, NEMA1 terminal housings, bulb & capillary thermostats or solid-state controls, plus up to a 150-lb. forged steel flange with bolt construction connecting the terminal housing and containment vessel.
 
 Circulation Heaters Features:
  •  High efficiency heat transfer
  • Pressure ratings to 600 lbs
  • ANSI Standard NPT or ANSI Class 150 connections
  • Heaters could be screw plug or flanged
  • Circulation Heaters, Re-Circulation Heaters, Industrial Circulation Heaters Stainless steel construction with Canadian Vessel Registration
  • Various housing options available NEMA 4, 4X, explosion proof
  • Suitable for steam, oils, chemicals, gases, corrosive solutions
Optional Features 
  • Weather Proof Insulated Shroud
  • All Stainless Steel Construction
  • ASME Section 8 Construction on Vessel
  • High Pressure Construction
  • High Temperature Ceramic Fiber Insulation
  • Passivation on all Wetted Surfaces
  • Other Sheath Materials: Carpenter 20, Model 400, Inconel 600, Hastelloy, and Titanium
 Applications Factors
  Heater selection is influenced by the following parameters:
  •  The Heated Medium, Viscosity, Specific Heat, Density and Corrosive Properties
  • The Presence of Contaminants in the Medium
  • The Corrosion Resistant Properties of the Heated Medium
  • The Sheath Watt Density of the Heating Elements (the watts/in²) and the Flow Rate of the heated moedium
  • The Vessel Design and Materihttps://www.nph-processheaters.com/myadmin/pages/edit.asp?PID=10als of Construction
  • Times, Temperature, and Pressure
Pressure Vessels
  •  All standard pressure vessel (tank) materials are rated to 150 lb. and made from:
  • Carbon Steel
  • 304/316 Stainless Steel
  • All catalog pressure vessels (tank) are steel unless otherwise noted.

COMMON SHEATH MATERIALS 

 Sheath Material
 Application
Watt Density
Watts/in²
 
Copper Potable water
40-80
Steel Fuel Oils, Hydraulic Oils 20-25 &12-25
Stainless
steel
De-Ionized, R-O, Process Water
Mild Acids
40-80
12-25
 
Incoloy 800
Water, Mild Alkaline Solutions, Air
and Gases, Maximum Sheath
Temperature 1400ºF
 
 
 
 10-125
Inconel 600
Water, Very Alkaline Solutions,
High Temperature Air And Gases
Maximum Sheath Temperature
1500ºF
 
 10-50
Titanium
Sea Water, Very Alkaline
Solutions, Some Acid Solutions
 
 
 10-45
Circulation Heaters Specifications / Design Capabilities:
Voltages. . . . . . . . . . . . . . . .120 to 600 Volts
Inlet/outlet. . . . . . . . . . . . . .N PT 1 /2" to 21 /2
Flanges 2" to 14" 16" to 24" on request
Heater. . . . . . . . . . . . . . . . .NPT or flange mount as required
Wattage's. . . . . . . . . . . . . . .Varied from 150 watts to 1 Megawatt
Sheath Materials. . . . . . . . . . Titanium, Monel, Incoloy, 316/304 Stainless,
Steel Copper, Carbon Steel
Max Temperatures. . . . . . . . . Incoloy 1600 degrees F (870 C)
304 / 316 Stainless Steel 1200 degrees F (650)
Steel 750 degrees F (400 C)Copper 350 degree F (175 C)
Pressure Rating. . . . . . . . . . . 150, 300 or 600 Ibs
Flange Materials. . . . . . . . . . .Standard Carbon Steel or 316/304 Stainless
Gaskets. . . . . . . . . . . . . . . . Rubber, Asbestos Free, or Spiral wound
Terminal Enclosures. . . . . . . . General Purpose (NEMA 1 ),
Moisture Resistant (NEMA 4), Corrosion
Resistant (NEMA 4X), Explosion Resistant (NEMA 7),
Explosion Moisture Resistant (NEMA 7/4)
Temperature control. . . . . . . .Thermocouple, RTD, or Thermostat
High Limit. . . . . . . . . . . . . . . High Limit Thermocouple, Hi Limit Tstat,
Certification. . . . . . . . . . . . . ASME, CRR, Heater & Vessel certification
 
 

How To Order Circulation, Recirculation or Closed Loop Industrial Heaters

Quotation Request Form
(Please complete the fields below)
Specify vessel materials Carbon SteelStainless SteelTitanium
Specify operating pressure 150 lb300 lb600 lb
Specify inlet and outlet NPT Pipe ThreadANSI Flanged 1"1 ¼"1 ½"2"2 ½"
Specify British Thread BSPBSPP 1"1 ¼"1 ½"2"2 ½"
Specify plug materials BrassSteelStainless Steel
Specify ANSI Flange size 2†to 24†(standard is 3â€- 150 lb) 2â€3â€4â€5â€6â€7â€8â€9â€10â€11â€12â€13â€14â€15â€16â€17â€18â€19â€20â€21â€22â€23â€24â€
Specify ANSI Flange rating 150 lb300 lb600 lb
Specify ANSI Flange Material Carbon SteelStainless SteelTitaniun
Non ANSI Flanges available in a variety of sizes and materials
Specify sheath materials CopperSteelStainless SteelIncoloy 800®Inconel 600®Titaniun
Specify power ratings 25-amp single pole single throw (SPST)25-amp double pole, single throw (DPST) 15-amp triple pole, single throw (TPST)
Specify temperature range of thermostats -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)
Specify temperature sensor options Type "K" thermocouple for sheath protectionType "K" thermocouple for process control100 Ohm RTD Sensor for process control
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 Select PriorityUrgent 3-8hrsASAP 8-36hrsModerate 4-7 daysNot Urgent 1-3 weeksFuture Reference 3-6 weeks Required Delivery Date Select Priority24-48hrs48-96hrs1-1½ weeksstandard 2-3 weeks
have a salesperson contact me
 

 
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