Heating Equipment
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Immersion Heaters
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Type 9RSU3 - Full stainess steel immersion heaters with 3 hairpin heating elements, TIG welded stainless steel fitting, cylindrical thread 1”1/2 BSPP; M45x2

Type 9RSU3 - Full stainess steel immersion heaters with 3 hairpin heating elements, TIG welded stainless steel fitting, cylindrical thread 1”1/2 BSPP; M45x2

Heating Equipment
Immersion Heaters
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Main applications

These immersion heaters with full stainless steel construction are intended for liquid heating applications in scientific, medical, pharmaceutical or food fields, as well as for applications in corrosive environments.

All welds are TIG, without any brazing. Liquids are in contact with stainless steel only.

They exist in standard in 2 types of surface load density: 5W/cm² and 10W/cm² (Others available on request). See the technical introduction of catalogue N°22 to select the best surface load.

Many enclosures for these heaters are available in our catalogue N°11.

Heater tube material: 8mm dia. in AISI 304 or Incolloy 800 (AISI 316; AISI 321; Incolloy 825 on request).

Fitting material: Stainless steel, TIG welded to the heating elements. The heated liquid is in contact only with stainless steel. The fitting material is AISI 304 for models with AISI 304, AISI 321 and Incolloy tubes, and AISI 316 for models with AISI316 tubes. Supplied without gasket and without nut. See accessories below. These fittings have M4 threaded holes for connection box assembly.

Thread: 1”1/2 BSPP (ISO 228); M45x2.

Thermowell: Dia. 8x7mm, using the same material than heating elements.

Heating elements connections: Stainless steel M4 screw terminals, nuts and washers

Ground connection: M4 threaded hole

Not heating immersed zone: 50mm including the length inside the fitting.

Surface load: Standard 5 W/cm² or 10 W/cm², others values on request.

Voltage: 230-240V single phase (110-115V and 380-400V on request)

Options:

  • N°1: Set of 4 brass jumpers for star-triangle commutation in 3 phases or connection of 3 heating elements in parallel.
  • N°2***: On request, the stainless steel fitting can be filled with epoxy resin, which provides incomparable protection against the penetration of moisture into the heating elements, especially when the environment is very humid and the heating elements only operate occasionally and for short periods.
  • Nuts and gaskets : see last section of catalogue N°2

*** Aisi 304 fitting with epoxy filling, replace SU by SV

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