Submersible centrifugal pumps for wells and boreholes with a diameter greater than 4“. The pumps are used for pumping out water, for pressurising and supplying water to the distribution systems of small and large buildings, both residential and industrial, as well as for irrigation, washing and fire-fighting systems. Technopolymer impellers with suction rings made of stainless steel. Pump casing, shaft, motor coupling, integrated suction filter and cable guard made of stainless steel. Suction body, delivery body and lifting eyes are made of stainless steel AISI 304. Removable integrated check valve made of technopolymer or with a stainless steel plate (depending on the model). Technopolymer impellers designed to ensure a high level of efficiency in compliance with directive 2009/125/EC (Eco design - ErP) with an MEI index ≥ 0.4 over the whole range. Certified by ACS, WRAS certificate. The 4GG motor is a two-pole asynchronous motor; the parts in contact with water are made of stainless steel AISI 304. The pressure block and bushings are cooled and lubricated by a mixture of water and glycol. The rotor runs in sliding radial bearings, axial load is taken up by a robust sliding thrust bearing.

• Operating range: up to 21.6 m³/h with head up to 427 metres
• Pumped liquid: Clean, free of solids and abrasive particles, non-viscous, non-aggressive, chemically neutral, similar in properties to water
• Maximum pump diameter: 99 mm
• Maximum sand content: 150 g/m3
• Delivery port diameter: S4-1, S4-2, S4-3, S4-4, S4-6: 1 ¼“
S4-8, S4-12, S4-16: 2”
• Impeller material: Technopolymer
• Liquid temperature range: 0 °C to +40 °C
• Maximum immersion depth: 4GG: 300 m
• Maximum number of starts: 20/h
• Protection rating: IP 68
• Insulation class: F
• Single-phase voltage: 1x230 V 50 Hz
• Three-phase voltage: 3x230 V 50 Hz - 3x400 V 50 Hz
• Installation: vertical position, horizontal installation is possible, a cooling jacket is recommended

Frequently Asked Questions

How do I choose the right pump output/head? It must cover the pressure losses of your specific circuit (pipe length, number of fittings) - if in doubt, consult a heating engineer, who will size the pump precisely for you.
Must installation be carried out by a professional? Fitting the pump into prepared pipework can be handled by a DIYer; we recommend having the electrical connection and system balancing checked by a professional.