Function and shape are, as is customary at EHEIM, an overall concept and well-thought out from top to bottom.
The characteristic multifunction handle combines 3 functions: carrying - opening/closing - priming. Faulty operation is prevented by the red safety adapter.
The supplied shut-off valves are rotating. Thus the filter can be installed more flexibly and is easier to use. The hose and filter can be connected safely and easily. The flow rate is adjusted at the drain cock.