Rotary valve is mostly used as a control valve in hydraulic steering system. The existences of flow separation, cavitation and other phenomena in hydraulic steering system usually generate flow noise.

The "rotary valve" is the key to the operation of power steering. It directs the power steering fluid under pressure to either side of the rack piston, which converts hydraulic power to mechanical ...

It is mainly, but not exclusively, concerned with motor cars and is basically confined to the modern hydraulic power steering rotary valve which uses torsion bar springing. Host of the illustrations ...

Fisher, an Emerson company, has developed its new range of Vee-Ball rotary control valves with the V150, V200 and V300 models. The valve range features precise flow control, a robust design and a ...

Rotary valve systems are not a new concept, having been used extensively in the 1970s in 2-stroke engine configurations. They were later dropped in favor of reed valves.