LEFF® 功能 - “Low Emission Flip-Flop”

LEFF® 代表“Low Emission Flip-Flop ”LEFF® 功能集成在 T.VIS® A-15 控制模块中，可以方便地启动。阀盘的间歇运动显然提高了清洗效率。

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LEFF® function integrated in GEA T.VIS A-15 control top

Resource-efficient solution

At GEA we are continually innovating to improve our customers’ efficiency, reduce their consumption of valuable resources and improve sustainability.

The LEFF® function integrated in GEA T.VIS A-15 control tops has been awarded the GEA Add Better label* for its positive impact on reduced water consumption. Conventionally, mixproof valves run a time-based seat lifting cycle to clean valve seats and intermediate cavity. The LEFF® function is the smarter, more efficient way. The valve opens in a pulsating mode, controlled by path-measuring instead of fixed intervals. This increases the intensity of flushing and effectively shortens flushing times for water and chemicals. It has been proven to saves up to 92% of water and cleaning agent used.

^{*The add Better label relates to the LEFF® function integrated in GEA T.VIS control top, released in 2003, which saves 92% of water in comparison to conventional valve seat cleaning.}

How does the LEFF® function works?

特征

无需在 PLC 中进行复杂的编程
无需其他系统技术
取决于PLC的时间周期
自动监控提升功能
显著降低成本（CIP 介质损失、废水成本等）

For double-seat valves it simply utilizes standard feedback units, without needing any special components. The straightforward configuration using two push buttons on the T.VIS® cap allows the LEFF® function to be activated separately at any time during set-up for the valve or double disc or even both.

Modulation of the valve disc during lifting makes it possible to drastically reduce cleaning agent consumption, respectively discharge into the drains and thus, reducing operating costs, compared to the conventional seat cleaning method.