Flange butterfly valve
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LTD371X turbine switch lug butterfly valve worm gear ductile iron QT450 elastic seat seal soft seal support lug butterfly valve
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Internal lining manual and pneumatic dual-purpose lug butterfly valve
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Steel lined PTFE proportional adjustment pneumatic lug butterfly valve
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American standard Class150 flange metal triple eccentric hard seal butterfly valve
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JIS 20K Japanese standard triple eccentric clamp butterfly valve - metal hard seal
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Extended stem double flange hard seal butterfly valve - triple eccentric
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Upward buried flange hard seal butterfly valve - triple eccentric
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Low temperature cryogenic treatment flange butterfly valve - triple eccentric/hard seal
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Large caliber hydraulic double eccentric double flange butterfly valve
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German standard DIN metal hard seal flange butterfly valve
Road 1 page 10 strip