Asian industrial valves and instruments manufactures sight flow indicators. These sight flow indicator bodies are designed to provide mechanical strength in order to withstand torsional forces caused by external piping strength under specified service condition. It is possible to use asian sight flow indicator for corrosion duties and adverse temperature condition. These sight flow indicators, manufactured in sizes 15 to 500 nb, are used on a wider variety of liquid and gaseous services. They can be furnished with a variety of special accessories and options to meet specific application requirements. Options include flanged, threaded, sw, bw, etc. A variety of end flange facings can be provided and flanges can be drilled as per different international specifications. Asian sight flow indicators have no moving parts other than rotating wheel or flapper. Therefore, they can be relied upon to give long and trouble free operation.