Fidicon Devices India is a company that manufactures and supplies sight glass and orifice flange assemblies.

Orifice flange assemblies are a type of flow metering device used to measure the flow rate of fluids in industrial applications. They consist of a plate with a hole (the orifice) placed in a flanged pipe joint, which causes a pressure drop that can be used to calculate the flow rate of the fluid. Orifice flange assemblies are commonly used in the oil and gas, chemical, and petrochemical industries.

Sight glasses are transparent windows installed in a pipeline or vessel to allow visual inspection of the fluid inside. They are commonly used in the food and beverage, pharmaceutical, and chemical industries to monitor the fluid level, color, and clarity, and to detect the presence of any solids or impurities.