Piston dosing pumps are a very important part for flow adjustment, and at Industrias Avilés you can find two different models.
The DR Series pumps are specially designed for agriculture, the 12V or 24V motor allows it to work through a battery, which can be powered by a solar panel or by a combustion engine.
The flow, in these DRC Series pumps, is a medium flow, since permanent magnet direct current motors vary their revolutions somewhat depending on the load applied to them.