manual muti-functional flow control valves for water treatment systems Manual muti-functional flow control valves for water treatment systems(with by-pass valve)*features1.controller model:volume type/down flow2.suited pressure:0.15-0.6Mpa3.transformer...

manual functional flow control valve  Manual functional flow control valves*Product features1.more reliable way of opening and closing2.manual function3.keyboard locked function4.It adopts LED dynamic colorful screen5.indication of power cut secularly6.two modes of running...