Rotary Pump Espresso Machines To differentiate best between espresso machines for private homes, offices, and on the other hand for catering, and restaurants, let's have a look to the pump: Private homes, offices are almost fine with a vibration pump. Those pumps need a rest between the pump cycles for the esspresso shots, otherwise they overheat and die early. For up to 50 extractions per day those machines are a good match. Even if some people prefer a rotary pump at home or at the office which produces a more constant pressure (bigger diameter of the pipes to the brewing group) and lasts way longer compared to the vibration pumps. Pricewise a vibration pump is about $70, a rotary pump with motor we talk rather about $500 and after 10 years or so you can replaceh the motor and/or pump with rebuilt ones as well
If your daily load is higher than 50 espresso extractions per day, you should take into consideration to buy an espresso machine with a rotary pump and a real motor. Also if you want to adjust the pump pressure easily, with a rotary pump, you can change the pressure directly at the rotary pump with a screw driver and in most cases you just need to lift the cup tray on top of the machine to adjust the pressure. Possible disadvantage of rotary pump espresso machines is the bigger housing for the espresso machine (space) as well as higher amp at the power outlet compared to vibration espresso machines. If you are used to a rotary pump espresso machine, you probably will not go back to a vibration pump machine
Elektra Model ART.T1 SIXTIES CHROME COMMERCIAL Espresso Machine, 110 volts 20 AMP The main feature of the Art.T1 Sixties espresso machine in a commercial environment is its extreme compactness versus performance - the result of an Elektra design study in placing a whopping 5.5 liters of boiler capacity into such a small frame and body. It comes of course with a rotary pump and motor. This machine's high wattage heating element is designed to heat the boiler for quick recovery and temperature stability. The Elektra Art.T1 even generates a lot of heat to keep those cups nice and toasty on top (minimum 2 hours required to pre-heat cups). The Art.T1 has 6 programmable buttons to measure the amount of water being pumped through the espresso coffee grinds. The extra 'K' button on the touchpad allows the operator to use the machine as a semi-automatic (start and stop of the espresso extraction) and to program the other 6 buttons.
Use as a stand alone tank/reservoir model or make a direct connection to plumb into a water line by simply moving the lever on the bottom of the machine. Quiet rotary vane pump is larger than the vibration pump found on many home model machines. Rotary vane pump provides quicker ramp up pressure at start of espresso extraction and is quieter than vibration pumps True Faema E61 grouphead is heaviest in its class and maintains active flow of water from the grouphead to the heat exchanger in the boiler