Premium domestic water system with centrifugal pump 7.8 bar pressure multi-stage centrifugal pump 2100 watts very good running smoothness 68 db, high pressure build up with large flow rate characterise this pump. Please note: this pump is only suitable if a check valve or foot valve is available at the bottom (e.g. in a well/cistern). We do not recommend the check valve directly in front of the pump and advise against purchase. Description: Pump starts and stops automatically, depending on the desired setting. Very smooth running 68 db, high pressure build up with large flow rate as well as an integrated hot running protection in the motor winding characterise this pump. Technical data: centrifugal pump 2.1 KW 230 V / 50 Hz. Protection class: IP 44. Delivery height: 78 m. Max. Pressure: 7.8 bar. Max. Flow rate: 10200 L/h - 170 L/min. Max. Suction height: 8 m at 1 inch. Robust and rust-proof stainless steel shaft. Multi-stage centrifugal pump. 6 x stainless steel paddle wheels covered with plastic for good smoothness. Max. Water temperature: 60 °C connection suction and pressure side: 1.25 inch female thread. The pump has 2 mounts at the bottom, suitable for mounting on a pressure boiler. Cable length: 45 cm with plug L W H: 36 x 15 x 17 cm. Noise level: 68 dB. Garden irrigation with 3/4 or 1/2 inch hoses > > max. 3-4 sprinklers can be connected. Please note that we do not recommend PE pipes as suction lines. If the check valve is installed in front of the pump and not as a foot valve, then you must also form a water column under the check valve. The water column must be resistant, as the pump cannot suck air which is in a suction line. Please fill the pump and suction line with water before use, otherwise there is a risk of dry running. The suction line should have a diameter of 1 inch - 1 1/4 inch and not be smaller or larger. Otherwise, the pump cannot provide the appropriate power or pressure. Technical data: 100 L membrane boiler made of stainless steel: wall 1.3 mm max. Pressure 8 bar wall operating temperature: 0-100° butyl membrane rubber bladder connection 1 inch stainless steel flange EPDM is resistant to heat, weather and ozone air pressure 1.8-2.0 bar suitable for drinking water. !