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DE4231494C1
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Liquid-reverse-flow preventer - has sleeve with cutting edge connecting intermediate chamber via openings in casing to atmosphere on seal removal
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DE3730029A1
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Shut-off and aeration device, in particular backflow preventer for drinking-water lines
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Shutting-off and aerating device, in particular back-siphonage preventer for drinking-water lines
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Backflow-preventing device, in particular in drinking-water lines
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Device for shutting off and aerating a pipeline
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Shut-off and aerating device, in particular pipe disconnector for drinking-water lines
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Shut-off and aeration device, in particular for drinking-water systems
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Device for shutting off a pipeline, in particular drinking-water line
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Device for shutting off a pipeline, especially a drinking-water line
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Valve with a housing through which the flow is linear
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Apparatus for shutting off and aerating a pipeline
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Valve with linear flow through the housing
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Device for shutting off and aerating a pipeline
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DE3500907A1
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Apparatus for shutting off and aerating a pipeline
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