SEHK screw-in heater

Screw-in/immersion heaters are regularly used for heating liquid media such as water or oils in a power range of up to 30kW max. They are a reliable solution when properly designed for the application. The standard program is designed to heat water and is available from the factory within 48 hours.
first-class insulation resistance thanks to an optimized seal technology
Immersion depth from 150 - 2250 mm
Simple mounting and low-maintenance operation
UL/cCSAus approval available for some versions (2-3 kW)

Items available in the shop now

181000

Einschraubheizkörper SEHK 2,0 kW ohne Regler

  • Einbautiefe 175 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181003

Einschraubheizkörper SEHK 6,0 kW ohne Regler

  • Einbautiefe 500 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181002

Einschraubheizkörper SEHK 4,5 kW ohne Regler

  • Einbautiefe 395 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181001

Einschraubheizkörper SEHK 3,0 kW ohne Regler

  • Einbautiefe 275 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181004

Einschraubheizkörper SEHK 7,5 kW ohne Regler

  • Einbautiefe 605 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181005

Einschraubheizkörper SEHK 9,0 kW ohne Regler

  • Einbautiefe 710 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181006

Einschraubheizkörper SEHK 12,0 kW ohne Regler

  • Einbautiefe 920 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181007

Einschraubheizkörper SEHK 3,0 kW mit Temperaturregler

  • Einbautiefe 275 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181010

Einschraubheizkörper SEHK 7,5 kW mit Temperaturregler

  • Einbautiefe 605 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181008

Einschraubheizkörper SEHK 4,5 kW mit Temperaturregler

  • Einbautiefe 395 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181009

Einschraubheizkörper SEHK 6,0 kW mit Temperaturregler

  • Einbautiefe 500 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol
181011

Einschraubheizkörper SEHK 9,0 kW mit Temperaturregler

  • Einbautiefe 710 mm
  • Schraubkopf MS G 1 1/2"
  • zur Erhitzung von Wasser/ Wasser-Glycol

Application areas for screw-in heaters

  • Drinking water, circulating water, deionized water, cleaning baths, etc.
  • Lubricating oils, hydraulic oils, heat transfer oils, degreasing baths, etc.
  • Steam, saturated steam
  • Air, nitrogen, etc.

Structure and material

SEHK screw-in heaters are versatile heaters characterized by a long service life and high energy efficiency. Siekerkotte manufactures its SEHK according to DIN 44874, VDE 0702 and other factory standards of leading machine and plant manufacturers.

SEHKs are available in a wide range of screw head sizes from ¾ '' to 2 ½ '' in brass and CrNi steels. The tubular heaters are hard soldered or welded into the screw head and provide heating power up to 30 KW.

Screw-in heaters can be controlled directly via temperature controllers, limiters (also 3 poles), PT100 and thermocouples or can be used as signal transmitters for a PLC.

Protection class versions up to IP69 are possible, with temperature ranging up to approx. 600°C medium temperature. As standard, we provide for an unheated area of 55 mm from the sealing surface, which can be adapted on request.

Technical data

Tubular heater

Diameter
6.5 mm; 8.5 mm; 10 mm; 11.5 mm; 16 mm
Material
1.4404; 1.4571; 1.4828; 1.4876; 2.4858
Immersion depth
150 mm - 2250 mm
Unheated length
55 mm (standard) or by agreement

Screw head

Material
Brass; 1.4301; 1.4305; 1.4571
Diameter
¾″-SW36; 1 ¼″-SW60; 1 ½″-SW60; 2″-SW70; 2 ½″-SW85

IP protection class

IP protection class
IP00 to IP69

Control / monitoring

Temperature controller (1 or 3 poles)
By agreement
Temperature limiter (1 pole)
By agreement
Temperature controller + limiter (1 pole)
By agreement
Temperature controller + limiter combination (3 poles)
30-85 °/110 °C; 30°-110 °/140 °C
PT100, thermal elements
By agreement

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