Flexible interfaces in plant engineering
Flexible, robust and offering high performance – the angle seat valve VZXA from Festo controls media flows quickly and reliably up to 230 °C. Its carefully thought-out product design and patented interface enable valve bodies and actuators to be freely combined, with a hot-swap function for quickly exchanging actuator or other spare parts.
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 sealing system ensures it is both leak-proof and durable.
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 it easier and faster to install the valves in pipelines. As a result, in areas that are hard to access, the actuators can be mounted on the valve body at the end of an assembly task.
The spindle seal is in the form of a cartridge. It comprises a stainless-steel sleeve with a preloaded chevron packing seal and can therefore be replaced simply and reliably without the need for a special-purpose tool.
The angle seat valve VZXA comprises an angle seat valve body, a piston or diaphragm drive and a visual position indicator. The flow-optimised valve body made of stainless steel is available in the nominal widths DN15 – DN65. The variant with threaded connection is available; clamp connections and weld-ends in accordance with American and European standards are planned.
The stainless-steel actuator is 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 width, is up to 30 bar. The large visual position indicator is fitted as standard. Thanks to the transparent cover made of polyethersulfone (PES), using the valve in chemically aggressive environments does not pose a problem.
Valve blocks in the tyre industry
The additional interface between the actuator and the process valve allows a customised block to be fitted with VZXA angle seat valves. Customised blocks save space and can thus be fitted into very tight spaces. Open/closed positions can be sensed using process data or mechanical feedback. Blocks also make it possible to handle flows of multiple media such as steam, nitrogen or a vacuum.
费斯托 (Festo)是一家全球性的独立的家族企业，总部位于德国埃斯林根。自成立以来，Festo在工业自动化技术和技术教育方面制定标准，从而为环境、经济和社会的可持续发展做出贡献。公司为超过35个行业的30万家工厂和过程自动化客户提供气动和电驱动自动化技术解决方案，其中生命科学和实验室自动化业务受到越来越多的关注。Festo产品和服务遍布176个国家。2022年，费斯托在全球61个国家的250多个分支机构拥有约20800名员工，实现销售额38.1亿欧元。每年约7%的销售额用于研发。在这家学习型企业，1.5%的销售额用于基础和进一步培训。Festo 教学培训 (Didactic SE) 是全球领先的技术教育和培训供应商，为全球客户提供工业环境中全面的数字化和常规学习解决方案。