Triflex Immersion Heater

Tri-flex Immersion heaters can be both mounted on a screw plug or a flange. The Tri-flex heater can be manufactured in steel, stainless steel, or Inconel if required.

The Tri-flex screw plug can be manufactured and mounted on 2”Npt, 2.5” NPT and 3”NPT in both stainless steel and steel. All tubes are mounted on 3000 LBS hex plug. Tri-flex Flanged immersion heater can be mounted on 2” up to 36 inch flange on 150, 300 and 600 LBS flanges in both stainless steel and steel.

The heated element is a 1.90 Inch diameter tube. The tube is tig welded on both the wet and dry side. NEMA 1-4 and HAZLOC enclosure is available for this heater. Grooves can be machined on the tube to create more surface area to lower watt density. Our standard maximum length (B-Dimension) is 96”B dimension.

Trivolt Industries also has two special anti-corrosion treatments specifically for our special designed Tri-flex heater. One product is TVC-01, a ceramic coating that resists temperatures exceeding 2400 deg F, and our TV-01, and infusion into the steel or stainless against salts, acids or very harsh environments both chemically and mechanically.

  • Applications
  • Specifications
  • Construction
  • Electrical Connections
  • Terminal Housing
  • Clamping Methods
  • Heat liquids
  • Gases
  • Oils
  • 3 wpsi up to 35 wpsi rec.
  • operating temperature up to 700 deg f.
  • Stainless steel 304-316
  • Steel
  • Exotic alloys
  • Post terminal
  • Terminal blocks
  • Lead wire with armour cable extension
  • 208 volt to 600 volt
  • Single phase and 3 phase
  • Nema 1 • Nema 4 • Nema 4x
  • Hazloc
  • Screw plug 2′ NPT and large
  • Flange 2 inch flange and larger
  • Available in 150Lbs and larger
Screw plug
  • Mounted on 2″ NPT, 2.5″ NPT and 3″NPT.


Screw plug with TC
  • Mounted on 2″ NPT, 2.5″ NPT and 3″NPT complete with high limit.
  • Mounted on 2″ up to 36″ flange.



Triflex Immersion Heater

Approvals & Certifications

All our manufactured heater elements are presently CSA and/or NRTCUL approved and/or CE certified. Our products are manufactured and controlled by our internal Quality Management System. This program allows TriVolt to track the quality of every component that make up our products and monitors the workmanship of every electrical heater and sensor manufactured and assembled in our facility.

CSA Std.C22.2. no 72-M1984
UL Standard 1030 6th Edition
EN 60335-1:2004
Shock and Vibration: IEC 61373; Category 1; Class B
CAN/CSA-C22.2 No. 72-10 (2013)
UL 499 Thirteenth Editions; Class 2871-02 and 2871-82.

TriVolt Industries can also comply with any customer specifications such as “Buy America”. Our facility in Westfield, MA, USA lends itself to perform final assembly of heaters and systems to accommodate any Buy-America content requirement.

We can also generate special test conditions with specific set-ups, use computer models to design or isolate problem areas.

We are continuously improving our manufacture methods and products through testing, research and development. Our high standards extend beyond our product line.