Circulation Heaters In-Line Heaters Guide:
Circulation/Inline Heaters-Components
Flanged 150 lb Circulation Heater-Nema 1 Enclosure
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. A 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.
NPHcirculation heatersfeature all-welded constructionof the steelshroud and flanges, hydrostatically pressure-tested ports, heavy-duty metal-sheathedheating elementsof 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 steelflangewith bolt construction connecting the terminal housing and containment vessel.
Circulation Heaters: Specifications, Manuals, Technical Letters & Tips:
 Circulation Heaters or Recirculation Heaters Specifications.pdf |
| Circulation Heaters Recirculation Heaters Wiring Diagrams |
| How to Extend the Life of Your Circulation Heaters-2.pdf |
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 Materials 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/in� |
| 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
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