I don't know where the time has gone... but it's been an entire month since last I wrote a Garage Roasters newsletter. I'm going to focus on three types of pumps in espresso machines... then provide my totally biased view on my preference for pumps. Having a preference for espresso machines pumps is a luxurious problem to contemplate!
Vibratory pumps are a popular type of pump used in many home espresso machines. They operate by using a vibrating piston to create pressure and move water through the espresso machine's brewing system. Vibratory pumps are known for their affordability, compact size, and ease of use, making them an ideal choice for home baristas. However, there are also some limitations to vibratory pumps. One limitation is their tendency to produce inconsistent flow rates, which some suggest can impact the quality of the espresso shot. Additionally, vibratory pumps can be noisy and require more maintenance than other types of pumps.
Rotary pumps operate by using a rotating mechanism to create pressure and move water through the espresso machine's brewing system. Rotary pumps are known for their ability to deliver consistent flow rates, making them an ideal choice for high-end espresso machines. Rotary pumps are known for their durability and reliability, making them an ideal choice for busy cafes and coffee shops. However, there are also some limitations to rotary pumps. One limitation is their cost, as they are typically more expensive than vibratory pumps. In addition, rotary pumps are much larger than vibratory pumps which can be an issue for home espresso machines.
Gear pumps are another type of pump used in some espresso machines. They operate by using interlocking gears to move liquid through the system. Gear pumps deliver precise volumes of liquid. Gear pumps are expensive and are said to be more prone to wear and tear than other types of pumps.
My preference for espresso machine pumps... the rotary pump. They just sound so solid and refined! Shallow aren't I!!!
