Immersion heaters for liquid heating – Tubular elements in copper
Backer manufactures screw-plug immersion heaters for heating water and oil. Available in copper, stainless steel or stainless steel with brass plug. Plug available in 1″, 1 1/4″, and 2″. Immersion heaters are used as heat sources in domestic water heaters, dishwashers, industrial baths, oil radiators and towel dryers, to mention a few examples. Immersion heaters incorporate tubular elements with flanges, nipples or plugs attached either by welding or soldering. Immersion heaters can be equipped with thermostats, temperature limiters and connection boxes. There are also thermostats and temperature limiters for mounting inside the tubular elements. Immersion heaters with ceramic elements are also available. Backer maintains a standard range of immersion heaters in stock (semi assembled) for water or oil heating, for promt delivery. We also manufacture producters according to customer specifications. Contact us if you find what you’re looking for.
Technical specifications
Backer standard range of screw plug immersion/ insertion heaters in stock are suitable as heat sources for instance in domestic water heaters, calorifiers, electric boilers, tanks and industrial baths. The heaters consists of 3 pieces Backer tubular heating elements soldered to a screw plug. It could be fitted with different accessories such as terminal box, thermostat, safety temperature limiter, tube and insulation for flow-through heater and socket key for assembly.
Brass plug G 1 1/4″
Type |
Power W |
Voltage V |
Insertion length mm |
Art.no. |
IU 20 |
1×500 + 2×750 |
230 |
215 |
2530 607 301 |
Mässingshuvud G 2″
Type |
Power W |
Voltage V |
Insertion length mm |
Art.no. |
IU 31 |
1500 |
230/400 |
180 |
2520 341 001 |
IU 33 |
2250 |
230/400 |
203 |
2520 341 002 |
IU 34 |
3000 |
230/400 |
280 |
2520 341 003 |
IU 36 |
4500 |
230/400 |
390 |
2520 341 005 |
IU 39 |
6000 |
230/400 |
390 |
2520 341 007 |
IU 310 |
7500 |
230/400 |
390 |
2520 341 008 |
IU 311 |
9000 |
230/400 |
390 |
2520 341 009 |
IU 312 |
10500 |
230/400 |
860 |
2520 341 010 |
IU 313 |
12000 |
230/400 |
985 |
2520 341 011 |
IU 314 |
13500 |
230/400 |
1085 |
2520 341 012 |
IU 315 |
15000 |
3 x 400 |
1235 |
2520 341 013 |
IU 611 |
9000 |
230/400 |
400 |
2520 539 302 |
- Material:
- Tubular elements Ø8,5 mm in copper C 12200
- Screw plug G2” (R50, 60 mm) in brass
- Tube for thermostat/ temp.limiter Ø12×0,7 length 187 mm in copper IU 31-33
- Tube Ø12×0,7 length 260 mm in copper IU 34-315
- Inactive length: 60±6 mm
- Electric connection: M4
- Assembly: Kit with gasket and connection parts included
- Max working temperature: 120°C
- Max working pressure: 9 bar
- Manufacturing standard: Backer 40579311 CE
- Standards: SS 4330701, SS-EN 60335-1, UL-1030, ISO 6469-3
- Power tolerance: +5% / -10%
- Surface power density: Approx 8 W/cm²