Description of the KTK120 Coffee Espresso Machine
The KTK120 is especially made for the preparation of espresso coffee without electric power. Thanks to its unique pressure transformation system it meets the requirements put down by INEI (Italian National Espresso Institute).
Among others, three main parameters must be maintained during the brewing process:
- Water pressure approx. 9 bar (130 psi)
- Brewing temperature approx. 90 °C (194 °F)
- Brewing time approx. 20 seconds
As compared to ordinary coffee, Espresso has a higher concentration of suspended and dissolved solids, and has crema on top. That characteristic thick auburn layer of foam with a creamy consistency consists mainly of coffee bean oil and contains most of the flavors and aroma.
Conventional espresso machines can obtain a water pressure of 9 bar exclusively by using a manually operated or electrically powered pump.
Devices that employ the riser tube principle, known as ‘Espresso Pot’, ‘Coffee Pot, ‘Moka Pot’, etc., are well known. They use a water tank at the bottom that is heated externally. Water is pressed through the brewing chamber and the coffee is collected in an upper container. However, the pressure obtained by this technique is nowhere near the required 9 bar. Hence, it fails to reach the INEI specification and it must not be called ‘espresso’. According to the laws of thermodynamics a water temperature of 175 °C would be necessary and that is simply not practicable because of safety restraints.
The KTK120 brews the espresso largely according to the INEI specifications. The physical dimensions of the vital parts are designed for optimum results. No parameters need be adjusted and no skills are needed by the user.
The KTK120 is lightweight, portable and easy to use. All relevant machine parts are food compliant. All sealing elements resist high temperatures. Hence, the KT120 can remain unattended on the heating source for at least 15 minutes without harm. The size of the bottom surface of the KTK120 fits on any universalized heating source. Thanks to an optimal heat transfer the water is heated up quickly.
The KTK120 brews your espresso almost noiseless. There is no hissing or bubbling sound and no row from any pump.
Cleaning of the KTK120 is simple and fast. The few metallic surfaces are rinsed with water and wiped with a cloth and can be stowed away in a cupboard if desired.
The KTK120 is used by people who like to enjoy a real good espresso even outside their home where no mains power is available. It can be used on any heat source that can bring a pan of water to the boil.
Water is filled through the opening where the capsule is also inserted. A slight rotation of a lever locks and seals the capsule holder. A coffee / espresso cup is placed on top of the KTK120 and you are ready to start the brewing process. Since the cup sits on the hot lid it is also pre-heated.
A ‘cold start’ takes about three minutes to produce the first espresso. For each additional espresso it takes about one minute after fresh water is refilled .
The tank holds a maximum of 120 ml, this is enough for a standard coffee (cappuccino, latte, coffee macchiato, etc.). For an espresso, however, should only be filled as much water in the tank, as is desired to beverage volume.
A test report will follow soon