snippet: <p><strong>AR40-SP/A3/4, Semi-Hydraulic 2 Diaphragm Alternating Volumetric Pump with 3/4" Solid Keyed Through Shaft </strong> </p> <p>Annovi Reverberi AR40-SP/A3/4 550 RPM semi-hydraulic two diaphragm alternating volumetric pump for use in gardening or semi-professional agricultural sector, trolley-mounted in combination with electric motors or internal combustion engines for gardening, and small sprayers for medium-pressure pesticide treatments in gardens, greenhouses, orchards or vineyards. </p> <p><strong>Features: </strong> </p> <ul><li>Parts in contact with pumped liquids in plastic-coated aluminium and body in aluminium </li> <li>Diaphragms in NBR, Desmopan or Viton </li> <li>Seals in NBR or Viton </li> <li>Die-cast casing with oil-immersed mechanism and clear plastic tank for visual level checking </li> <li>Pistons with ring for a more efficient “oil cushion” system to protect the diaphragm </li> <li>New-design diaphragm cut-out system to prevent contact tearing even in heavy-duty operating conditions </li> <li>Spherical sector profile valves for lower flow resistance and improved volumetric efficiency </li> </ul>
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