Master Flo Valve Inc. is a technological leader and world-class manufacturer of chokes, specialty control valves and supporting actuation. Master Flo's choke valve design is ideal for any production, injection or dump applications where product performance and valve reliability are crucial. All valves utilize the superior performance proven by the cage with external sleeve trim design. With over 25 years of experience, continuous testing and design improvements, this trim design excels in all applications.