an existence without corners, without nooks; nothing stays.
(how would a freed dead-space (un)fold or (un)furl itself?)
[translated from german]
First, I looked it up to find out what it means in relation to valves: dead space-free valves prevent contamination in the valve. Without question, definitely useful. Nothing gets stuck or left behind in an object free of corners and edges. Nothing undesirable can form there.