Bombay Instrument Mfg. Co. Manufactures Flow Switches. Bombay Instrument Mfg. Co. Offers Flow Switch, Rotameters Tubes, Chlorinators, Orifice Plates and Assemblies, Valves & Pipe Fittings, Thermometers, Pressure Gauges & Thermocouple, Velocity meter, Stack and duct velocity meter, Air velocity meter, HVAC duct pressure meter, Digital Flowmeter, Digital Water Flowmeter, Battery operated water flowmeter, Water Flow switch, Oil flow switch, SS flow switch, Paddle flow switch, etc. The Flow Switch monitors flow and sends a trip signal to another device such as a pump to protect it. The Flow Switches are of four types like Paddle Type, Flow Indicator Cum Adjustable Switch, Y Type Flow Switch, and Float Type.