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EP2015048A1
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In line valve sampling system
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USRE34923E
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Valve stem seal leak protection and detection apparatus
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CA2033877A1
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Sampling device with a valve unit and a receiving unit
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CH673157A5
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Sampling valve for fluid pipeline - has external operating lever moved against return bias to open sampling valve
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US4759530A
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Stem and disc seal construction for butterfly valves
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US4696323A
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Plastic lined rotatable valve
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DE3231950A1
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Coupling, especially a rapid-closure coupling for a hose connection on a container
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DE3035581A1
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Plastic seal between solid bodies - has transverse corrugations of constant radius bearing against bodies
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DE3020409A1
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Heat exchanger with spiral windings around vertical exchanger tubes - has springs holding tubes down inside spring-loaded outer tubes
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DE2923434A1
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Connecting union for flanged glass tube ends - has clamp rings engaging rear faces of tube flanges via annular flat wire or plastics coil springs
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