业务新闻

GEA's hermetically sealed control valve extends shelf life of food and beverages

17 Sep 2018

GEA is expanding its D-tec® valve line with the new GEA D-tec® P/DV control valve for ultraclean applications in the food, beverage and dairy industries. This allows reliable control of process parameters such as volume flow, pressure, temperature and filling level of a vessel. Due to the hermetically sealing D-tec® stem diaphragm, the valve achieves a higher standard of hygiene. For example, it helps ensure product safety in beer mixes and soft drinks, fruit juices, milk-based and lactic acid-fermented products or even sauces, and contributes to a longer minimum product shelf life as is often demanded by the market

The P/DV type D-tec® control valve uses hermetically sealed D-tec® stem diaphragms

The P/DV type D-tec® control valve uses hermetically sealed D-tec® stem diaphragms

Longer shelf life, less preservatives

The P/DV type D-tec® control valve uses hermetically sealed D-tec® stem diaphragms. These provide improved contamination protection against the atmosphere and thus ensure microbial stability of the product throughout the entire process. While the D-tec® valve line can be used in aseptic processes, GEA sees the application of the new control valve primarily for ultraclean applications. The control valves are selected for products that require an extended shelf life, with or without cooling, depending on the pH value, cold chain and storage characteristics. These products include iced tea, fruit juice, fruit yoghurt and ESL milk. 

Pascal Bär, product manager for aseptic valves at GEA, adds: “Durability is important to the consumer, but not at any price. Today’s consumers are very sensitive to the topic of preservatives. Ultraclean processing is beneficial here because it helps to achieve the desired shelf life of a product with less preservatives. As part of a customized process chain, our new D-tec® P/DV valve control valve takes manufacturers this one step further.”

Special valve diaphragm connection increases pathogen barrier and service life

GEA is launching the P/DV D-tec® control valve for ultraclean applications in the food, beverage and dairy industries

GEA is launching the P/DV D-tec® control valve for ultraclean applications in the food, beverage and dairy industries

“The critical point between valve stem and stem diaphragm has an increased risk of pathogen introduction: Here, metal and plastic – two materials that react differently to temperature and pressure – come into contact. For this reason, we have designed a supporting ring that guides and counteracts the stem diaphragm during stroke movement. This approach is more effective than other options available on the market”, says Bär, explaining how the valve contributes to increased process and product safety.

In addition, this type of connection ensures that the membrane is subject to minimal mechanical stress during the switching process. With this approach, GEA has succeeded in making the stem diaphragm last longer as well as demonstrably keeping its temperature resistance and cleanability high. “Our main goal is to ensure system availability and economic viability for food and beverage producers. This is achieved by our new control valve, which combines functional flexibility and quality with manageable operating costs”, concludes Bär. Producers gain further operational safety through reliable leak detection. GEA's valve experts have designed the entire construction to be easy to maintain in order to reduce system downtime during maintenance. 

Modular construction enables process adaptation

The P/DV D-tec® control valve is part of the VARIVENT® modular principle, which is characterized by its variability for different requirements. This enables the valve to be configured according to the prevailing process conditions. It has an equal-percentage control cone characteristic and is available in the valve sizes DN40 up to DN100 and OD1.5” up to OD4”. Different KVS values are available for each valve size and different housing combinations can be implemented. The valve seat can be executed with a metallic stop as well as soft (V-Ring) and hard sealing – the latter with the new TEFASEP® gold material, which GEA recently introduced. In addition, D-tec® control valves are equipped by default with the proven GEA T.VIS® P-15 position controller.

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GEA Group Aktiengesellschaft

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40468

Düsseldorf


Germany

+49 211 9136-0

About GEA

GEA 是食品加工行业及众多工业领域的领先供应商之一,2019 年的销售总额约达 49 亿欧元。

作为国际技术集团,我们专注于机械制造,生产运营,工艺技术及其设备组件。 GEA 为各种终端用户市场的复杂生产流程提供可持续的能源解决方案,并提供全面的服务组合。集团在长期持续增长的食品和饮料行业的收入约占其总收入的 70%。截至 2018 年 12 月 31 日,集团的全球员工已超过 18,500 人。GEA 在其业务领域中是市场和技术领导者。GEA 是德国 MDAX 上市公司(G1A,WKN 660 200),拥有 STOXX® Europe 600 指数和优选的 MSCI 全球可持续发展指数。
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