EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009H-240.A
An Eaton Brand
H
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PFR11-16 - Flow Regulator
Fixed, priority type, pressure compensated
Up to 114 L/min (30 USgpm) • 350 bar (5000 psi)
Description
Inlet flow passes through the
fixed orifice and the radial
holes in the spool/sleeve
assembly then out of the
regulated port. The pressure
drop across the orifice is
sensed at each end of the
spool, producing a force
which, at the required flow
rate, overcomes the spring
force. The resultant movement
of the spool regulates the flow
by opening the radial valve
ports to the bypass port and
closing the regulated flow
ports.
The valve will pass flow in
the return direction but this
is restricted by the flow path
through the control orifice.
Operation
Inlet flow passes through
the fixed orifice and the
radial holes in the spool/sleeve
assembly then out of the regu-
lated port. The pressure drop
across the orifice is sensed
at each end of the spool, pro-
ducing a force which, at the
required flow rate, overcomes
the spring force. The resultant
movement of the spool regu-
lates the flow by opening the
radial valve ports to the bypass
port and closing the regulated
flow ports.
The valve will pass flow in
the return direction but this
is restricted by the flow path
through the control orifice.
Features
Cartridge construction gives
versatility of application. A
valve may be fitted into a
line body, a custom designed
Hydraulic Integrated Circuit or
directly into a cylinder or other
actuator. Leakproof adjust
screw gives easy, accurate
adjustment to required flow
setting. Hardened and ground
working parts give accurate
flow control and long working
life.
Sectional View
Back pressure - psi
0 500 1000 1500 2000 2500 3000
Priority flow rate - USgpm
(105 SUS oil @ 120
0
F)
15
10
5
0
25
30
20
Priority flow rate - L/min
(21,8 cSt oil @ 49
0
C)
0
20
40
60
80
100
120
Back pressure - bar
0 21035 70 100 140 175
A
A
B
B
Ratings and Specifications
Performance data is typical with fluid at 21,8 cSt (105 SUS) and 49° C (120° F)
Typical Application pressure (all ports) 350 bar (5000 psi)
Cartridge fatigue pressure (infinite life) 350 bar (5000 psi)
Rated flow Maximum inlet flow 151 L/min (40 USgpm)
Maximum regulated flow 114 L/min (30 USgpm)
Flow regulation accuracy 1,9-10,9 L/min (0.5-2.9 USgpm) ±15%
11,4-114 L/min (3-30 USgpm) ±10%
Factory set maximum priority flow rate accuracy under standard test conditions and within the above ranges
Temperature range -40° to 120°C (-40° to 248°F)
Cavity C-16-3
Fluids All general purpose hydraulic fluids such as:
MIL-H-5606, SAE 10, SAE 20, etc.
Filtration 18/16/13
Standard housing materials Aluminum or Steel
Weight cartridge only 0,38 kg (0.84 lb.)
Seal kit 565811 (Buna-N), 889610 (Viton
®
)
Viton is a registered trademark of E.I. DuPont
Typical Flow Regulation
Performance Data
A - Port 3, priority (regulated outlet) pressurized.
B - Port 2, (bypass outlet) pressurized.
1
3
2
1
2
3