Brew pumps are one of the pieces of equipment that can help speed up your brew day - no more waiting for gravity to empty your brew kettle or fermenter. Brew pumps allow you to transfer different kinds of liquid automatically. There are different types of pumps that you can get, and it is crucial to know that the pump's design fits a particular function. Plus, you can use pumps from the start to the end of the brewing process. They save you a lot of time and effort when making beer at home.
To date, there are three types of pumps used in homebrewing, centrifugal, diaphragm and peristaltic pumps. The diaphragm pumps operate by flexing the pump to create pressure changes. Centrifugal pumps, on the other hand, works by using a rotating impeller to draw the liquid. Lastly, the peristaltic pumps use displacement to draw liquid. The thing is that these pumps' action varies depending on their design, so which do you choose? The choice is yours. What matters is that the pump meets your requirements regarding how fast it works, the maximum liquid temperature it is safe to use it with so that it will transfer your precious liquid from one point to the other.
You can use chugger pumps to move the wort through a counterflow chiller or pump the hot wort from the kettle. Another use is to pump cold water through an immersion wort chiller or in your RIMS set-up. You can also use a pump to transfer the cool wort to your fermenter. As you can see, there are many processes in home brewing to use a brew pump, as they are handy and work much quicker than relying on gravity to do the job.