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EP0172364A1
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Explosion safeguard valve
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DE2801950A1
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Explosion and flame blow-back protection valve - has hollow plastics filled valve body readjusted for operation after explosion
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CH606882A5
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Explosion and flame blow-back protection valve - has hollow plastics filled valve body readjusted for operation after explosion
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ATA76477A
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Shut-off device for an air delivery pipe
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CH603175A5
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Butterfly damper for air duct
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CH600249A5
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Low pressure air conditioning and heating convector
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CH582856A5
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Air entry controller for convector heater - has valve disc raised and lowered on mouth of air supply tube underneath
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CH594858A5
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Space heating and ventilating system
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GB1175078A
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Valve Device for Air-Raid Shelters
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GB987363A
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Improvements in or relating to ventilator valves
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GB661255A
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Process for the rapid drying of yarn spools and autoclave for carrying out the process
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