High Pressure
Checkball Piston Pumps
PF500 SERIES
0.21 to 0.69 gpm (0,79 to 2,59 L/min) at 1800 rpm
Rated: 10 000 psi (700 bar), Maximum: 15 000 psi (1040 bar)
High Pressure Hydraulics DYNEX ENGINEERING
SPECIFICATIONS
Specifications
Output Flow
at 1500 rpmñD
Output Flow
at 1800 rpmñD Rated
Pressure
Maximum
Intermittent
Pressure Rated
Speed
rpmñE
Maximum
Speed
rpm.
Pump
Models
U.S.
gpm L/min
U.S.
gpm L/min psi bar psi bar
PF501-11 0.17 0,66 0.21 0,79 8000 560 8000 560 1800 3600
PF504-11 0.28 1,06 0.34 1,28 8000 560 8000 560 1800 3600
PF507-11 0.38 1,45 0.46 1,76 8000 560 8000 560 1800 3600
PF510-11 0.57 2,16 0.69 2,59 8000 560 8000 560 1800 3600
PF501H-11 0.17 0,64 0.20 0,75 10 000 700 15 000 1040 1800 3600
PF504H-11 0.27 1,02 0.32 1,22 10 000 700 15 000 1040 1800 3600
PF507H-11 0.37 1,40 0.45 1,70 10 000 700 15 000 1040 1800 3600
PF510H-11 0.56 2,12 0.67 2,52 10 000 700 15 000 1040 1800 3600
ñD Output flow based on typical performance at rated pressure with pressurized inlet where required, as
shown in the table on page 2.
ñE Contact the sales department for applications requiring continuous duty operation at speeds higher than
1800 rpm or lower than 900 rpm. See “Typical Performance Curves” on page 3.
. Higher than rated speeds may require a pressurized inlet. Refer to “Inlet Conditions” on page 2.
Fixed displacement checkball pumps,
with bi-directional shaft rotation, provide
constant direction of output flow regardless
of the direction of drive shaft rotation.
OPERATING ADVANTAGES
Inlet and outlet check valves in each
piston pumping chamber give checkball
design pumps unique advantages. The
positive seating action provides greater
volumetric efficiency, especially at higher
pressures.
The check valves take the place of a
valveplate in other pump designs. With
no metal-to-metal rotating surface,
checkball pumps are resistant to wearing
and scoring, providing longer life with
lower lubricity and contaminated fluids.
TYPICAL APPLICATIONS
Reduced power requirements, as low as
1.0 HP at 10 000 psi (0,75 kW at 700 bar),
make these pumps ideal for use in remote
locations with limited power supply.
These compact pumps can be used on
portable power packs for high-pressure
torque wrenches and other service tools.
PUMP SELECTION
The table shows specifications for
standard pressure models and “H” option
models for use at pressures higher than
8000 psi (560 bar).
Ordering a PF500 Series pump requires
a complete model code specifying drive
shaft, seal and outlet port options. Refer
to “Typical Model Code” on page 4.
Maximum Pressure
The intermittent pressures listed in the
table are the maximum pressures a
pump can sustain for occasional, short
periods of operation without appreciably
reducing life expectancy.
Split-Flow® Provides Multiple Outlets
PF500 models with split-flow covers
efficiently supply flows for multiple
function circuits. Piston outputs are
grouped together in the cover, with
various piston flow splits available in this
four-piston pump.
Multiple outlet pumps can be used for
synchronized
actuator movement or
multiple function circuits. They are ideal
for tool circuits with changing flow and
pressure requirements. For Split-Flow®
options, see “Typical Model Code” on
page 4.
