Author:     Published time:2016-10-10 15:40     Reading times:955    

In response to market needs for an all-plastic lug style butterfly valve, we introduced the second-generation 5-Serie Valve. The Type 578 valve is designed for corrosion resistance and long service life and it is available in manual, electric and pneumatic actuated versions. Constructed of a glass filled polypropylene (PP) outer housing with over molded Stainless Steel 316 lugs, the 578 valve incorporates a  "double eccentric" design rather than the traditional "boot style" design of other plastic lug style butterfly valves on the market. The industry-tested double eccentric design allows the disc to completely disengage from the disc seal during operation, reducing friction and component wear to provide longer service life on the pipe without sacrificing the valve's sealing ability. The eccentric principle requires only half the operating torque (over boot styles) and is not susceptible to elastomer swelling over time. The truly non-wetted shaft provides maximum protection against leak out and shaft corrosion. The Butterfly valve is a good fit for applications in aquatic life support, water pools, chemical industry and water treatment markets all over the world.