Orbinox UK Ltd This DN400 (16″) ORBINOX ‘EB’ series bi-directional knife gate valve has just been fitted with a ROTORK IQ series multi-turn electric actuator. Our competent technician is in the process of setting the open and closed limits via the non-intrusive setting tool before refitting the stainless steel guards. Its application is the sludge digester isolation valve on a sewage treatment works, for high integrity process isolation. ORBINOX – Valve solutions in more than 70 countries