en.Wedoany.com Reported - VAG, the valve brand of Georg Fischer, unveiled the VAG DUOJET® @ON smart air release valve at the IFAT trade fair in Munich in May 2026. This product integrates automated hygienic flushing and continuous network monitoring into a single device for drinking water distribution networks.
The VAG DUOJET® @ON is a single-chamber high-performance air release valve with three core functions: air release during pipe drainage, air release during pipe filling, and continuous operational air release. It handles large volumes of air during dynamic operating phases and small volumes during continuous operation, including under high air flow rates. The valve integrates an automated flushing system and a sensor suite for real-time network status monitoring—functions that previously required separate systems or on-site personnel.
Stagnation in drinking water networks is a known hygiene risk, particularly in dead-end zones or low-flow areas. The DUOJET® @ON addresses this through its automated flushing function, which operates at user-defined intervals (e.g., every three months) without the need for on-site intervention. The system is designed to support compliance with the German technical standard DVGW W392-2 for the inspection, operation, and maintenance of drinking water distribution networks. By replacing manual flushing cycles with an automated, repeatable process, the valve helps reduce the operational burden on water network operators. Timo Bugert, Global Engineering Product Manager at VAG, stated that the automated flushing system integrates seamlessly into the network, offering not only hygiene benefits but also advantages in maintenance and network operation, laying the foundation for consistently reliable hygienic safety in the network.
Beyond its physical valve functions, the DUOJET® @ON integrates sensors that continuously measure pressure conditions and valve position. The collected data supports the assessment of pipeline and manhole infrastructure conditions. When deviations from normal operating conditions are detected, network operators receive periodic status updates and real-time alerts, identifying pressure anomalies, abnormal operating states, and unauthorized access to the valve or installation chamber. These are transmitted as status or warning messages. Data transmission uses one-way encryption, with communication flowing only from the field device to the operator; external access to the valve is blocked by design.
The valve is designed to operate for at least three years without on-site maintenance. VAG states that the combination of low-maintenance operation and integrated data capabilities supports both compliance and a long-term shift toward condition-based maintenance strategies. The product is intended for integration into existing and future network infrastructure, with potential applications extending to higher-level network analysis and predictive maintenance planning. Headquartered in Mannheim, Germany, VAG has manufactured metal valve solutions for the water industry since 1872 and became part of Georg Fischer (GF) in 2025. Georg Fischer, headquartered in Switzerland, employs approximately 13,300 people across 46 countries, and its Flow Solutions business reported sales of 3 billion Swiss francs in 2025.
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