GM's Saginaw Division eventually developed the most reliable, widely used integral power steering gear in the industry. Rotary valve steering first appeared in 1959 Cadillac, Pontiac, Buick ...

Take the steering for example ... When GM's Saginaw Division introduced the rotary valve integral power boxes in '59 Cadillac, Pontiac, Buick, and Oldsmobile cars it didn't take long for the ...

Your car's hydraulic power steering system works by using pressurized fluid to help you turn the wheel. A lot of parts contribute to that function, including a pump, rotary valve, rack and pinion ...

“CPP’s 500 Series power steering conversion gearbox is a modern ... An open centered, rotary-type valve provides smooth operation throughout the steering range, while retaining excellent ...