A position built over 60 years of experience and consolidated by an incessant thrust for the development of new products, with the aim of satisfying customers’ needs and requirements. is a world leader in the field of diaphragm pumps for spraying and weed control. Just like the machines, even the most important components such as the diaphragm pumps must guarantee excellent performance, in particular high flow rate (allowing the supply of longer and longer bars) and high priming capacity (for the rapid loading of large tanks from canals or reservoirs).Īt the same time, the modern design of the self-propelled and trailed machines requires compact pumps with reduced overall dimensions, which can be easily placed in limited spaces.Īnother fundamental feature of modern pumps dedicated to the treatment of crops is the ease of maintenance, to allow rapid intervention in case of an emergency without wasting precious time during the weed control season.Ĭomet S.p.A. The total area of farms is in fact constantly increasing and therefore requires bar systems of ever increasing size and efficiency. The crop treatment sector is now oriented towards self-propelled machines or large hyper-performing trailed machines, which are able to cover large cultivated areas in the shortest possible time. All parts in contact with the pumped liquid (heads and manifolds) are made of techno-polymers or protected by plasticizing treatment to increase resistance to chemical agents. The characteristics of diaphragm pumps for bar systems are high flow rates (up to and over 600 l/min) and low pressures (between 10 and 20 bars). The modern sector of agricultural machinery for crop protection involves the use of machines with increasingly high performing boom sprayers and new intensive cultivation techniques require that all components, especially the diaphragm pumps, ensure high resistance to the harshest work conditions, thus maintaining high performance in terms of flow rate, priming capacity, power absorption and silence.Ī perfect piston stroke/bore ratio is also required to minimize the stress on the diaphragms, thus ensuring low maintenance, maximum durability and excellent priming capacity.įor bigger agricultural machines, pumps are often combined in tandem, to increase the overall flow rate or allow the synchronous use of multiple applications (spraying / stirring / recirculation). Read also: THE COMPONENTS OF A DIAPHRAGM PUMP In this case, make sure that the water level is no more than three meters below the pump’s suction fitting in order to avoid the aforementioned cavitation. In case of feeding from canals, reservoirs or tanks located below the pump, the feeding occurs by suction, i.e. The diaphragm pump must also be installed below the level of the feed tank so that the liquid can flow to the pump at natural atmospheric pressure and avoid cavitation. water supply or other pump), since positive pressure can interfere with valve closure and result in early component wear. One of the most important recommendations is that the pump should never be fed from a positive pressure water source (e.g. In order to obtain correct operation and the best operating results, a number of important measures are essential, starting with the preparation of the safety devices (pressure unloader valves, safety valves, cardan shaft cones, etc.) together with the correct sizing of hoses and filters. The main advantages of using diaphragm pumps in agriculture are: excellent priming and self-priming capacity, good dry running capacity and mechanical-chemical resistance and resistance to chemicals. They are used on atomizers for the treatment of vineyards, orchards and olive groves. ![]() High pressure pumps: between 30 and 50 bars.They are intended for application on boom sprayers for the treatment of open field crops: cereals, tomatoes and vegetables. In agriculture, these pumps are used for spraying and weed-killing treatments to protect crops from pests. ![]() Diaphragm pumps are mainly used in agriculture for spraying and weed control and for the treatment of orchards, vineyards and olive groves.ĭiaphragm pumps belong to the category of positive displacement volumetric pumps, which exploit the alternating variations of the volume of a chamber (expansion and contraction) to generate imbalances in pressure and give rise to the pumping of the liquid.
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