Rotameter Unit without Tubes allows the differential pressure to be created in main flow through orifice plate in main pipeline that creates branch of flow moving through by-pass line, provided across orifice plate from upstream side to downstream side of orifice plate. The Rotameter Unit can accommodate one, two and three tubes of 230mm size range. Rotameter Unit is made of quality grade material that ensures longer functional life. Rotameter Unit without Tubes come in different specifications to suit specific requirement.