EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009H-200.A
An Eaton Brand
H
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
PFR5-8 - Flow Regulator
Fixed, priority type, pressure compensated
Up to 10 L/min (2.5 USgpm) • 280 bar (4000 psi)
Operation
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
Typical Flow Regulation
Cartridge only
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.
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.
50004000
10
8
6
4
2
5000
350
4000
280
3000
210
2000
140
1000
70
0 300020001000
0 70 140 210 280 350
0
Bypass pressure
higher than priority
Priority pressure
higher than bypass
Pressure - bar
Pressure - psi
3.0
2.5
2.0
1.5
1.0
0.5
0
12
Flow - L/min
(21,8 cSt oil @ 49°C)
Flow - USgpm
(105 SUS oil @ 120°F)
Sectional View
Description
These valves are priority flow
regulators. The flow (and
actuator speed) will be largely
independent of the load and
the pressure conditions.
If used to regulate flow from
a fixed supply, for example
a standard gear or piston
pump, the valve will pass the
required flow and any surplus
flow will be diverted to the
bypass port. The bypass flow
may be used for a secondary
circuit whether the secondary
pressure requirement is higher
or lower than the regulated
pressure.
The valve inlet pressure will
be approximately 7 bar (100
psi) more than the regulated
or bypass pressure, whichever
is higher.
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) in steel housing
Cartridge fatigue pressure (infinite life) 280 bar (4000 psi)
Rated flow maximum inlet flow 15,1 L/min (4 USgpm)
maximum regulated flow 10 L/min (2.5 USgpm)
Temperature range -40° to 120°C (-40° to 248°F)
Internal leakage 82 cm
3
/min. @ 350 bar (3000 psi) 5 in
3
/min @ 5000 psi)
Flow regulation accuracy 0,4–1,9 L/min (0.1–0.49 USgpm) ±20% @ 210 bar (3000 psi)
0,4–1,9 L/min (0.1–0.49 USgpm) ±40% @ 350 bar (5000 psi)
1,9–5,7 L/min (0.5–1.49 USgpm) ±15% @ 350 bar (5000 psi)
5,7–10 L/min (1.5–2.5 USgpm) ±10% @ 350 bar (5000 psi)
Factory set maximum flow rate accuracy under
standard test conditions and within the above ranges
Cavity C–8–3
Fluids All general purpose hydraulic fluids such as
MIL-H-5606, SAE 10, SAE 20 etc.
Filtration
Cleanliness code 18/16/13
Standard housing material Aluminum or steel
Weight cartridge only 0,07 kg (0.15 lbs)
Seal kit 02–173427 (Buna-N)
02–173434 (Viton
®
)
Viton is a registered trademark of E.I. DuPont
Performance Data
1
3
2
3
2
1
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 H-201.A
An Eaton Brand
H
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
PFR5-8 - Flow Regulator
Fixed, priority type, pressure compensated
Up to 10 L/min (2.5 USgpm) • 280 bar (4000 psi)
1
Function
PFR5 - Priority ow regulator
2
Size
8 - 8 size
3
Seals
Blank - Buna-N
V - Viton
®
4
Adjustment
F - Fixed orice
5
Valve Housing Material
Omit for cartridge only
S - Steel
A - Aluminum
Code Port Size Housing Number
Aluminium Steel
Fatigue Rated Fatigue Rated
0 Cartridge only
4T SAE 4 02–160741 02-160745
6T SAE 6 02–160742 02-160746
2G 1/4" BSPP 02–160739 02-160743
3G 3/8" BSPP 02–160740 02-160744
See section J for housing details.
6
Port Size
2
3
1
22,1 (.870) hex
0.750"–16 Thd.
Ø1
5,8 (0.622)
Ø1
4,2 (0.559)
40,6
(1.60)
8,5
(0.33)
Model Code
2 31
PFR5 8 (V)
5
(*)
6
**
7
Factory Set Flow Rate
(Specify in USgpm)
Range 0,4–9,5 L/min
(0.1–2.5 USgpm)
8
Special Features
00 – None
(Only required if valve has
special features, omitted if “00”)
SS - 316 Stainless Steel
external components
4
F
7
*.*
8
**
Dimensions
mm (inch)
Cartridge
Basic Code
PFR5-8
•
WARNING
Aluminum housings
can be used for
pressures up to 210 bar (3000
psi). Steel housings must be
used for operating pressures
above 210 bar (3000 psi).
Torque cartridge in steel
or aluminum housing to
34–41 Nm (25–30 ft lbs).
Installation Drawing (Steel)
– – – – ––
3.4
(0.13)
63.5
(2.50)
56.9
(2.24)
54.0
(2.12)
66.7
(2.63)
15.5
(0.61)
2 x 7.14
(0.281)
3
1
2
29.7
(1.17)
9.1
(0.36)
19 x 1
(0.75)
