4 poles electrical motor (1450 RPM) with thermal protection and water cooling (except HLR 1211/1510/1614 LP models).
Three ceramic pistons, three ceramic coated pistons (model 1211/1510/1614 LP)
Built-in by-pass valve nickel plating brass linear pump head with high temperature water seals and bushing.
Integrated elastic joint, for best pump coupling (except 1211/1510/1614 LP models).
Low voltage and delayed Total Stop.
Suction and delivery S. S. valves.
Vertical burner with high thermal efficiency steel coil.
Temperature regulation gauge with high sensitive stainless steel sensor.
Detergent built-in tank 3 l.
Auxiliary motor for burner air cooling and mechanical two ways fuel pump.
Hose reel (optional).