FGE Power subsidiary to build a new 726 MW combined-cycle natural gas-fired power plant near the community of Westbrook, Mitchell County, Texas. FGE Power subsidiary to build a new 726 MW combined-cycle natural gas-fired power plant near the community of Westbrook, Mitchell County, Texas.
Preparing the Machine and Portafilter. 1  1. Heat the espresso machine. 2  2. Fill the machine's tank with water. 3  3. Remove the portafilter and put it on a scale.  4. Dose the 1  espresso. 5. Tamp the espresso in the portafilter.
There are two types of lever machines; manual piston and spring piston design. With the manual piston, the operator directly pushes the water through the grounds. In the spring piston design, the operator works to tension a spring, which then delivers the pressure for the espresso (usually 8 to 10 bar; 116 to 145 psi). Steam-driven A steam coffee machine