DK78395C -
Device for valves with a passage opening in the valve housing, in which a valve seat piece with an annular valve seat is arranged.
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Device for valves with a passage opening in the valve housing, in which a valve seat piece with an annular valve seat is arranged.
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DK390547A1946-05-281947-10-21
Device for valves with a passage opening in the valve housing, in which a valve seat piece with an annular valve seat is arranged.
DK78395C
(en)