Flow Star Engineering Private Limited offers Y-Strainers Sight Flow Indicator. Flow Star Engineering Private Limited is awarded with ISO 9001-2000 certification. The Y-Strainers Sight Flow Indicator is mainly used in application where the amount of solids to be removed is small, and where frequent clean - out is not required. This flow indicator is commonly used in pressurized lines, gas or liquid, but can also be used in suction or vacuum conditions.