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FI4530A
(en)
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"Hermetie" furnace valve system with ventilation valves alternatively connected to it
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CH65399A
(en)
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Valve
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FR465377A
(en)
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Valve
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FR21820E
(en)
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Improvements to shut-off valves
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FI5657A
(en)
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Ventilation valve "X"
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FR464744A
(en)
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Ball valve
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CH65783A
(en)
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Flap valve
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FR436097A
(en)
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Improvements to stop valves
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FR485384A
(en)
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Valve packings
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FR413805A
(en)
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Improvements to shut-off valves
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FR17349E
(en)
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Valve
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FI6008A
(en)
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Improved ventilation valve
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FI5812A
(en)
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Ventilation valve improvement
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CH51686A
(en)
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Valve cock
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CH64469A
(en)
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Valve gate
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CH62424A
(en)
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Float valve
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FR500398A
(en)
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Improvements to the valves
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CH64756A
(en)
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Control valve
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FR444426A
(en)
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Airplane valves
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FR435666A
(en)
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Regulating valve arrangement
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FR468505A
(en)
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Ventilation flap
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FR492283A
(en)
|
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Advanced shut-off valve
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CH51165A
(en)
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Valve cock
|
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CH50500A
(en)
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Valve cock
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CH67468A
(en)
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Reduction valve
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