For the polymers processing industry, the requirement is for chemical dosing pumps that can handle highly viscous liquids. As such liquids can affect a pump’s rated maximum capacity one should opt for mechanisms such as diaphragms metering and ball valves that can can control the amount of polymer that is dosed into the system.
Chemical process pumps should also be selected on he basis of their ability to be compatible with the materials that they are handing. One must also ensure that the ball valves function in such a manner that liquids do not back flow into the pump.