Graebener® recently expanded its product portfolio and is pleased to introduce its new stack presses for fuel cells and electrolyzers. The stack presses support the technical testing of fuel cell or electrolysis stacks at the end of their production processes.

The pre-assembled stack, which consists of a large number of plates, is first moved into the machine and then compressed to a defined height until a certain pressure is reached within the stack. This pressure must then be maintained unchanged for several hours. At this time, the stack is subjected to all the necessary technical tests carried out by the customer and with the help of further procedures. These are necessary to confirm its full operability. As soon as the tests are completed, the stack is finally assembled with tie rods or tension straps and the finished stack is removed.