Immersion heaters for liquid heating | Tubular elements in stainless steel with brass plug
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
Tubular elements in stainless steel EN 1.4404 Protective tubing with inner dia. 10.6 mm for thermostat and/or thermal cut-off. Brass plug. With element tube in stainless steel and brass head R50. Tubular element in stainless acid resistant steel 1.4404 (AISI 316L). Brass head R50 (G 2”). The element is approved for 9 bar, temperature 120°C. Thermostat tube with inside diameter 11 mm for thermostat and/or temperature limiter.
Brass plug G 1” (without protection tubing)
Type |
Power W |
Voltage V |
Insertion length mm |
Art.no. |
IU 21 |
1×250 + 1×750 |
230 |
320 |
3020 398 001 |
IU 22 |
1×500 + 1×1000 |
230 |
410 |
3020 398 002 |
IU 23 |
1×725 + 1×1225 |
230 |
450 |
3020 398 003 |
IU 24 |
1×1250 + 1×1750 |
230 |
475 |
3020 398 004 |
Brass plug G 1 1/4”
Type |
Power W |
Voltage V |
Insertion length mm |
Art.no. |
IU 25 |
1×500 + 1×500 |
230 |
160 |
3020 398 101 |
IU 26 |
1×500 + 1×1000 |
230 |
255 |
3020 398 102 |
IU 27 |
1×670 + 1×1330 |
230 |
255 |
3020 398 103 |
IU 29 |
1×1000 + 1×2000 |
230 |
380 |
3020 398 104 |
Brass head G 2”
Type |
Power W |
Voltage V |
Insertion length mm |
Art.no. |
IU 31R |
1500 |
230/400 |
180 |
2520 391 501 |
IU 3R |
2000 |
230/400 |
260 |
2520 391 502 |
IU 34R |
3000 |
230/400 |
280 |
2520 548 001 |
IU 36R |
4500 |
230/400 |
390 |
2520 548 002 |
IU 39R |
6000 |
230/400 |
390 |
2520 548 003 |
IU311R |
9000 |
3×400 |
390 |
2520 548 004 |
IU 3R |
9000 |
3×400 |
755 |
2520 548 005 |
IU 3R |
12000 |
3×400 |
755 |
2520 387 504 |
IR 3R |
15000 |
3×400 |
900 |
2520 387 505 |
IR 315R |
15000 |
3×400 |
1235 |
2530 397 706 |
IU 3R |
20000 |
3×400 |
900 |
2520 387 506 |
IU 3R |
23300 |
3×400 |
900 |
2520 387 507 |
IU 611R |
9000 |
230/400 |
400 |
2520 539 303 |