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ES471961A1
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Plug valve of the through-flow type.
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IT1079497B
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Flexible lip seal for valve - has re-entrant form edge and tapered thickness to compensate for large deformations
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FR2385016A2
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Valve with flexible seat - having undercut groove to form deformable lip to match profile of valve member on closure
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FR2342442A1
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Circumferentially grooved disc valve - has elastically deformable lip giving low pressure seal for lifting or hinging valve
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FR93777E
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Ball valve with retractable floating seats.
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FR1515230A
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Sheet material handling machine
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FR1511626A
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Ball valve with retractable floating seats
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FR1511019A
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Butterfly valve with automatic opening and closing as a function of the pressure prevailing upstream of said valve
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FR1252052A
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Machine for handling sheet or plate materials
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