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Water division

Visa SpA, through its trademark Nettuno®, has successfully been present in the water treatment sector for over 40 years, offering self-propelled irrigation systems and high quality motor pumps for agriculture and industry. The reliability and versatility of Onis Visa products are due to the use of the best components and latest technology which gives high performance as well as savings in operating costs. The experience gained in the entire world, under the most different and difficult environmental conditions, allows to completely satisfy all the modern agriculture needs, in compliance with environmental respect and following the strictest standards. Visa SpA provides high-qualified personnel to support operations, from the initial project design to final installation. From the single component to the complete plant, it represents a guarantee of quality and prompt service for a constantly-evolving agriculture field. Design, robustness, innovative accessories, full technical support and after-sale service, combined with short deliveries, are only a few aspects of Visa SpA quality service.

Star

With star the start of each of the three phases is connected together. Connections are taken from the ends of the three phases to give the three phases
Star symbol voltage

Delta

With Delta the starts and ends of the phases are connected. The end of phase 1 is connected to the start of phase 2, the end of phase 2 to the start of phase 3, and the end of phase 3 to the start of phase 1. Connections are taken from the three start-end points to give the three phases.
Delta symbol voltage
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