Sigura 350

  • Separation of process water for large scale plants
  • Efficient Class 5 protection of potable water
  • Complies with with EN 1717
  • Delivery rate of 80 or 120 l/min
  • Fully automatic unit
  • Energy-efficient technology, standby consumption less than 0.2 Watt
  • E.g. for irrigation systems, car washes or livestock watering installations
Break Tank Sigura 350



SIGURA break tanks are designed for use with irrigation systems, car washes, livestock watering installations and any process in general that may not be directly connected to the mains water supply system.


The break tank SIGURA 350 separates the process water circuit from the mains water supply. This protects the public supply of portable water against possible contamination. The mains water top-up system is implemented as an open outlet in accordance with EN 1717 (formerly DIN 1988/4). The break tank is installed in a frost-free utility room, draws mains water out of the mains water circuit and feeds it under pressure into the process water circuit. Thus the break tank is also suitable for boosting the pressure in multiple storey buildings.

Design and operating principle

All SIGURA break tanks from WISY use tried-and-tested, reliable components. Its Zeta 02 pump controller is especially energy efficient, consuming less than 0.2 watts in standby mode.

Buffer Tank

The 350 Litres buffer tank makes sure that it is always enough water and pressure in the process water circuit.


Diameter: ø 700mm
Height tank: 1.225mm
Total height: 1350mm

Pump Performance

To fit any project, two different pumps are available: The powerful Multigo 407 offers up to 120 l/min, while 80 l/min are handled by the economic Multigo 207.

Technical Data

Delivery rate, max. 80 oder 120 l/min
Delivery head, max. 48 m (480 kPa)
Buffer tank volume 350 Litres
Complies with DIN EN 1717:2011-08, DIN 1988-100:2011-08
Safety device (DIN) AF

Item number

Sigura 350-205 max. 80 l/min TR 5355
Sigura 350-407 max. 120 l/min TR 5357