The Dynex Company was founded in 1957 in Milwaukee, Wisconsin developing high pressure pumps, motors and valves in response to the increased demand for hydraulic products in new markets.

Rivett was acquired by its parent in 1966 and manufacturing was moved to the Dynex facility in Pewaukee, Wisconsin. Combining Dynex and Rivett extended the company’s products to serve both mobile and industrial applications.
Most hydraulic companies supply components that operate to 5000 psi (350 bar). At Dynex, the target for new designs begins at 10 000 psi (700 bar).
Dynex is one of the the world’s leading producers of high pressure hydraulics for moderate and high flows. At high pressures, these products provide the power in smaller packages. They offer more force for unique, new machine designs.
At lower pressures, these same products give you the life and performance margin essential in critical environments. Your machines are stronger, more efficient and reliable. They can be used with confidence anywhere in the world.
One of the firms specialties is multiple outlet hydraulic pumps for synchronised cylinder movement.
Split-Flow(r) hydraulic pumps, with independent multiple outlets, efficiently supply flows to multiple function circuits.
The checkball pump design, with isolated pumping chambers, allows the output of each piston to be used separately. These pumps provide multiple flows from one pump, with greater accuracy than flow dividers.
The benefits from multiple outlets include a supply flow for synchronised movement of cylinders and motors without flow dividers; simultaneous supply of independent flows to multiple functions in a circuit with separate loads; efficiently supply flow in a system with changing flow and pressure requirements.
Isolator valve models are also a particular strength in the Dynex range. Isolator valves, which screw into the pumping chambers, can isolate the output of one or more individual pistons from the main pump outlet. and up to ten independent flows are possible from a ten-piston pump.
In split-flow-cover models, another string in Dynex's bow, individual piston outputs are grouped together in the pump cover or barrel. This design provides smooth multiple flows to meet hydraulic system requirements.

Split flow circuits
Multiple outlet pumps can simplify a circuit, providing more accurate flow with fewer components and less piping. A single pump can eliminate separate dedicated pumps or mechanical gear boxes.
A single pump can provide synchronised cylinder movement without using flow dividers. These pumps provide unique advantages for lifting, jacking and skidding, increasing the accuracy and flexibility of systems for handling heavy loads.
In Hi-Lo circuits, one pump can efficiently supply fluid in a circuit with changing flow and pressure requirements.
This makes the pumps ideal for clamping, pressing and high-torque tool applications.