Sigma/ 1 (Basic Type)

Capacity range 17 – 144 l/h, 12 – 4 bar

  • Integrated relief valve to protect the pump from overloading
  • Reliable operation by bleed option during the suction process
  • Patented multi-layer safety diaphragm with optical (optionally electric) signalling
  • Description
  • Applications
  • Tech Specs
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The Sigma/ 1 Basic is an extremely robust motor-driven metering pump with patented multi-layer safety diaphragm for excellent process safety. It offers a wide range of power end designs, such as three-phase or 1-phase AC motors, even for Exe and Exde areas with ATEX certification.

  • Volume-proportional addition of chemicals in water treatment, e.g. sodium-calcium hypochlorite for the disinfection of potable water.
  •  Addition of chemicals depending on the measured value, e.g. metering of acid and alkali for pH neutralisation in waste water treatment.
  • Time-controlled addition of chemicals in the cooling water circuit.
  • Pulse-controlled metering in the bottling of different volumes e.g. glycerine filling of manometers.
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