Profile: Sure Flow Products, LLC provides rotameters, mass flow meters, and paddle wheels. Our flow rate indicator is made of polyvinyl chloride, polysulfone, or PVDF. It reads in GPM & LPM scales. Our viscosity compensating indicator is made of stainless steel and brass. The spring loaded, mechanical design mounts in any orientation. Our indicator is provided with field adjustable switches. Our flow meters include turbine, magnetic, positive displacement, and ultrasonic flow meters.