V -Z
Valve armature, in which the closure body movement is rectilinear and takes place in the end region in the flow direction. NOTE: This definition also applies to check valves and axial check valves. Extension device Part of the actuator that mechanically transfers the movement of the actuator to the actuator of a valve without actuator when the valve is arranged without actuator away from the actuator. Bolted lid Lid bolted to or into a housing. Bolted top shell, which is screwed to or in a housing. Welded cover Cover welded to the housing for mechanical connection and sealing Welded upper part Upper part welded to the housing for mechanical connection and sealing. Distributor fitting A fitting in which the ratio of two or more outflow streams is influenced by a common input flow by changing the position of the closure body. Voltalef (fluorine-containing thermoplastics) -> trade name for PCTFE By changing the chemical structure, starting from PTFE, a number of modifications can be made, whereby one or the other special property can be specially taken into account. This can be done by incorporation of H atoms, Cl atoms or CF3 groups instead of individual fluorine atoms or by copolymerization of the tetrafluoroethylene with modified building blocks. The resulting products are semi-crystalline, meltable and thus thermoplastically processable, but at high mass and mold temperatures; In addition, corrosion-resistant tools are required.
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