
Backer immersion heaters for liquid heating with element tubed in acidproof stainless steel
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, vessels and industrial baths. The heaters consists of 3 pieces Backer tubular heating elements brazed to a screw plug. It could be fitted with different accessories such as terminal box, thermostat, safety temperature limiter, tube and insulation for flowthrough heater, socket for assembly etc.
Technical data
Inactive length
60±6 mm (25203875xx = 100±10mm)
Max working temperature
120°C
Max work pressure
9 bar
Norm
Backer 40579311 CE
Standards
SS 4330701, SS-EN 60335-1, UL-1030, ISO 6469-3
Surface load
ca 6-11 W/cm²
Power tolerance
5% / -10%
Material
Tubular elements Ø8,5 mm in acidproof stainless steel EN 1.4404/AISI 316L Screw plug G2” (R50, 60 mm) in brass Tube for thermostat/temp.limiter Ø12x0,7 length 187 mm for IU 31R and 260 mm for others
Electric Connection
M4