Angle seat valves

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Angle seat valves VZXF

The pneumatically operated angle seat valve VZXF is a 2/2-way valve for shutting off and controlling liquids, viscous media and gases. The V angle seat valves have a soft-seated valve disk made of PTFE, a valve spindle and an EPDM V-ring package or an NBR lip seal for sealing them. To close the valve, the valve actuator moves the valve disk towards the valve seat using a spindle/piston rod, thereby pressing the valve disk onto the sealing seat in a force fit. Pneumatic actuators with 50 mm and 80 mm effective diameters are used as valve actuators. The piston actuators are single-acting and designed as NC variants. A total of 160 different pre-configured valve variants are available.

Pneumatically actuated angle seat valves are used for filling liquids, oils and gases, for steam applications as well as for cooling and heating applications in primary processes. These are a few examples of applications: autoclaves, SIP systems and other steam applications, industrial washing machines and washing systems, cooling and heating applications in the manufacture of wafers, tire vulcanization.

VZXF angle seat valves made of stainless steel and gunmetal are offered in the nominal widths ?" (DN15) to 2" (DN50) and the connection options G-thread and NPT-thread. The piston actuators are available in stainless steel, brass and aluminum. "LABS-free" versions are also available for use in production areas where any influence of substances (e.g. silicone, PTFE) that interfere with paint wetting must be avoided. The automotive industry and painting plants belong to the corresponding customer segment. The corresponding angle seat valves are LABS-free according to Festo standard (corresponds to VW standard). The vacuum-compatible variants are used, for example, in packaging machines that have to generate a coarse vacuum. ATEX-certified versions are also available, which are used in production areas that are potentially explosive to a certain extent. The VZXF angle seat valves are certified for use in equipment group II, equipment category 2.

Angle seat valves VZXA

The pneumatically operated angle seat valve VZXA is a 2/2-way valve for shutting off and controlling liquids, viscous media and gases. The VZXA angle seat valves have a soft-seated valve disk made of PTFE as well as a modified PTFE, a valve spindle and an pre-stressed EPDM V-ring package for sealing them. To close the valve, the valve actuator moves the valve disk towards the valve seat using a spindle/piston rod, thereby pressing the valve disk onto the sealing seat in a force fit. A pneumatic actuator operated by pressurised gas acts as the valve actuator. The actuators can be double-acting and single-acting. The carefully thought-out VZXA product design and patented interface enable the various valve bodies and actuators to be freely combined, thus offering even greater flexibility when configuring applications. In total, more than 2000 different valve variations can be configured.

Pneumatically actuated angle seat valves are used for filling liquids, oils and gases, for steam applications as well as for cooling and heating applications in primary processes. These are a few examples of applications: autoclaves, SIP systems and other steam applications, industrial washing machines and washing systems, cooling and heating applications in the manufacture of wafers, tire vulcanization.

Easy assembly – the unique interface between the modules means that the actuators can be replaced without opening the piping. The simple separation of valve bodies and actuators makes the installation of the valves in pipelines easier and faster. This advantage becomes particularly clear in the case of orbital welding. The patented seal system prevents the operating medium from leaking out. The spindle seal is in the form of a cartridge. It comprises a stainless steel sleeve with a pre-tensioned domed seal packing consisting of PTFE sealing rings and can therefore be replaced simply and reliably without the need for special tools. Sturdy materials – the angle seat valve VZXA consists of a stainless steel (1.4409) valve body, a stainless steel piston actuator or diaphragm actuator and a visual position indicator. Thanks to the transparent cover made of polyethersulfone (PES), the valves can be used trouble-free in chemically aggressive environments. The large optical position indicator comes as standard. High flow rate – the stainless steel valve body has optimized flow characteristics for high flow rates.

Modularity – the stainless steel actuator is available in three sizes as well as with the control functions normally closed (N/C), normally open (N/O) and double acting (DA). The valve bodies are available with different connection types, connection standards and in the nominal sizes DN15 (1/2") – DN65 (2?"). High media pressures – the maximum operating pressure, depending on the nominal size, actuator version and inflow direction, is up to 30 bar. Interfaces are provided together with internal channels for the operating pressure to allow the subsequent addition of positioners and a valve control unit.

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