B + S Metalpraecis Gesellschaft fur Metallformgebung m.b.H.

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Gelsenkirchen, DE

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Ball valve with a ceramic valve ball and ceramic seat rings
- Patent number 4,795,133
- Issue date Jan 3, 1989
- B + S Metalpraecis Gesellschaft fur Metallformgebung m.b.H.
- Rutger Berchem
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

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