Leakage Butterfly Valve
The AWH leakage butterfly valve is designed to be used in applications where mixing of liquids must be precluded. Double sealing guarantees absolute operational reliability. Field experience shows that any two gaskets / seals or their seats will never fail at a time. This principle has been taken into account in designing the AWH leakage butterfly valve.
As both butterfly valves are controlled by a single actuator, even though each butterfly valve blocks open area individually, it is definitely ensured that both fluids are physically isolated from each other. Positive mechanical linking is provided for all the individual valves, so both a reliable control performance and the greatest possible safety of function are guaranteed.
Use of standardised components from our butterfly valve range permits great variability with respect to connections, gasket or sealing materials, and modifications. Moreover, it allows spare-parts stock keeping to be minimised, while ensuring that parts will be available at short notice. These valves come with the well-known stem bushings on the valve disk. The leakage valve con be operated by an actuator or manually.
Leakage Butterfly Valve with pneum. Auxiliary Valves and Actuator VMove 1
AWH butterfly valve technology has produced another innovation: the leakage butterfly valve with pneumatic auxiliary valves. It is designed for reliable separation of media and comes with "auxiliary valves" – one leakage and one flushing valve – fitted as standard. The auxiliary valves can be activated synchronously or in isolation. Thanks to their design, both valves are easy to clean and completely isolated when closed.
Since the auxiliary vale's sealing piston is positioned almost flush in the through-flow pipe, contamination is not possible at this point. The butterfly valve itself follows our tried and tested, hygienic design principle. The drive and auxiliary valves can be fitted with optional initiators to monitor the individual valve positions. The "double-flap principle" offers maximum safety when handling different media in the same pipe system.
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