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Pneumatic drive with hand-operated doubling apparatus and pneumatic damper
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Inflatable umbrella
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Circular sealing device for ball plug cock
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Tackle
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Rotary machine
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Spherical plug valve
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Automatic machine for emergency closing of valves
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Valve
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Pneumatic drive with mechanical stand-by and hydraulic damper
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Windmill
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Mechanical drive of pipe-line fitting
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Stepping drive
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Electric drive
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Gate valve
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