Flexible, robust and offering high performance – the angle seat valves VZXA from Festo control media flows quickly and reliably. Their carefully thought-out product architecture and patented interface enable valve bodies and actuators to be freely combined, thus offering even greater flexibility in the configuration of applications.
Different actuators and valve bodies can be combined for easy integration into the application. Individual, function-tested modules simplify the replacement of actuators during conversion or maintenance. The patented seal system prevents the operating medium from leaking out.
This 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 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.
Angle seat valves VZXA consist of an angle seat valve body, a piston or diaphragm actuator and a visual position indicator. The flow-optimised valve body made of stainless steel is available in the nominal sizes DN15 – DN65. Available connection variants include threaded, clamp and welded connections as per American and European standards.
Stainless steel actuators are available in three sizes and with the control functions NC (normally closed), NO (normally open) and DA (double-acting). The maximum operating pressure, depending on nominal size, is up to 30 bar. The larger visual position indicator is fitted as standard. Thanks to the transparent position indicator cap made of polyethersulfone (PES), the valves can be used in chemically aggressive environments.
Interfaces are provided, together with internal channels for the operating pressure to allow the subsequent addition of positioners and valve control heads.
Festo AG is a global player and an independent family-owned company with headquarters in Esslingen am Neckar, Germany. The company supplies pneumatic and electrical automation technology to 300,000 customers of factory and process automation in over 40 industries. The products and services are available in 176 countries. With about 18,800 employees in over 250 branch offices in 61 countries worldwide, Festo achieved a turnover of around €2.74 billion in 2016. Each year around
8 % of this turnover is invested in research and development.
In this learning company, 1.5 % of turnover is invested in basic and further training. Yet training services are not only provided for Festo's own staff – Festo Didactic SE also supplies basic and further training programmes in the field of automation technology for customers, students and trainees.