DYNEX Products
Dynex manufactures hydraulic components and systems for mobile and industrial machinery.
High flow and high pressure products include piston pumps, control valves, piston motors and LSHT vane motors, hydraulic actuators, electrohydraulic controls, hydraulic power units and systems.
Dynex products have been sold worldwide for over 40 years.
Checkball Pump
A fixed angle wobble plate, which rotates with the shaft, causes the pistons to
reciprocate in their bores.
The individual piston check valves direct flow from the inlet side of the pump
to the pump outlet.

Pump Specifications

- Fixed delivery:
   Flows from 0.22 to 60 gpm (0,83 to 227 lt / min) at 1.800 n/min.

- Variable delivery:
   Maximum flows from 12.7 to 60 gpm
   (48,1 to 227 lt / min) at 1800 n/min.
   Pressure compensated models to 8.500 psi (590 bar)


Unique Pump Benefits
Extended life at pressures from 6.000 to 20.000 psi (420 to 1400 bar)
Exceptional contamination tolerance .
Multiple flows from one pump without flow dividers .
Operate with low viscosity special fluids.
The direction of output flow is constant, regardless of drive shaft rotation.
Electrohydraulic volume control .
Split-Flow Checkball Pumps
The unique checkball pump design, with isolated pumping chambers, allows the output
of each piston to be used separately. In split-flow cover models, individual outputs
are grouped together in the pump cover or barrel, providing smooth multiple flows
to meet system requirements.
Isolator valves can be used to isolate the output of one or more individual pistons
from the main pump outlet.
Up to ten independent flows are possible from a ten-piston pump
Split-Flow Circuits
In multiple function circuits, one pump can simultaneously supply independent
fixed or variable flows to multiple functions in a circuit with separate loads.
A single pump can provide synchronized movement of cylinders without using
flow dividers.
These pumps provide unique advantages for lifting, jacking and skidding operations, 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.
Split-Flow pumps can simplify a multiple function circuit, reducing piping and installation time.
Directional Control Valves

HP03 Valves

HP03 Valves Sliding spool valves rated for 15 gpm at 10.000 psi (57 lt / min.  at 700 bar)
Compact valves eliminate complex valve circuits for four-way control in high pressure systems.
Full range of actuator, spool and other options.

Standard NFPA/ISO Pattern Valves

5.000 psi (350 bar) valves with models rated to 165 gpm ( 625 lt / min.).

VST Series Valves

Non-silting ball-on-seat design for reliable shifting.
Two position, two-way valves, rated for 1 gpm at 15.000 psi ( 3,8 lt / min. at 1040 bar)
for low flow venting functions.
Two position, three-way valves, rated for 5 gpm at 10.000 psi (19 lt / min. at 700 bar)
for load holding functions.

Pressure Control Valves

H8819 Series

Proportional relief valves rated for 50 gpm at 15.000 psi (190 lt / min. at 1040 bar) or 75 gpm at 9000 psi (284 L/min at 620 bar).

VH Series

Relief valves with models rated to 20 gpm at 15.000 psi (76 lt / min at 1.040 bar).

Pressure controls with models rated to 150 gpm at 5000 psi (568 lt / min. at 350 bar),
with relief, reducing, unloading, counterbalance and sequence functions available .
Valveplate Pumps and Motors

Electrohydraulic pumps for accurate variable speed control of actuators

Pump output flow proportional to a variable electrical input signal
Pressures to 4.000 psi (280 bar), flows to 24.5 gpm (92,7 lt / min.) at 1.800 n/min.
Compact motors produce torque to 1.386 lb-in at 3.000 psi (157 Nm at 210 bar).

Low-Speed, High-Torque Motors

Vane motors with direct drive and hollow shaft capability .
Ideal for vertical installations on earth augers or rock drills .
Torque to 13.750 lb-ft at 2.750 psi (18.645 Nm at 190 bar).
Replaces Vickers MHT motors.

Piston Motors

Pressures to 8000 psi (560 bar).
Ideal for applications subject to pressure spikes, vibration, constant starting/stopping,
and sudden direction reversals.
Compact motors produce torque to 4.775 lb-in at 5.000 psi (540 Nm at 350 bar).

Remote Proportional Actuators

One inch output rod movement proportional to an electrical input signal.
Used to stroke variable pumps and motors, spools of large valves, throttle controls,
clutches or brakes.
Simple control with output force from 60 to 1.200 lb (0,27 to 5,33 kN).

Power Units and Systems

JIC and N.F.P.A. standard or custom built units to 700 hp (523 kW).
Incorporate customer or distributor supplied components.
Stainless steel construction.
Socket welding for high pressure systems.
Pressures up to 15.000 psi (1.040 bar).
Reservoirs up to 440 U.S. gallons (1.665 lt.)


For further information: