Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 K-220.A
An Eaton Brand
K
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Ratings and Specifications
Performance data is typical with fluid at 21,8 cST (105 SUS) and 49°C (120°F)
Typical application pressure range 7-210 bar (100-3000 psi)
Maximum inlet flow 15 L/min (4 USgpm)
Regulated flow range 0.4-8 L/min (0.1-2.5 USgpm)
Internal leakage 82 cm
3
/min (5 in
3
/min) max @ 210 bar (3000 psi)
Temperature range -40° to 120°C (-40° to 248°F)
Reseat pressure 90% of crack pressure
Fluids All general purpose hydraulic fluids such as:
MIL -H-5606, SAE 10, SAE 20, etc.
Description
Fixed priority flow control with
relief on priority flow port.
Operation
This standard valve package is
used to maintain constant flow
to priority circuits when input
flow is greater than required,
regardless of changes in
upstream or downstream pres-
sure. It will bypass the rest of
the flow to an auxiliary circuit
or to tank.
Relief valve on a priority port
limits pressure on a prior-
ity port, as well as ensures
bypass flow when there is no
demand on priority circuit.
Features
Priority flow pressure com-
pensation, all ports except T
can be pressurized to 210 bar
(3000 psi). Aluminum in-line
type housing, tamper proof
and adjustable relief options,
gauge port. All components in
the package are true cartridges
and can be removed from the
housing without disturbing the
plumbing.
Typical Flow Regulation
Performance Data
PFRR-8 - Flow Control
Pressure compensated, priority type, with relief on priority flow
15 L/min (4 USgpm) • 7-210 bar (100-3000 psi)
4000
10
8
6
4
2
5000
350
4000
280
3000
210
2000
140
1000
70
0 5000300020001000
0 70 140 210 280 350
0
Pressure - bar
3.0
2.5
2.0
1.5
1.0
0.5
0
Flow - USgpm (1 05 SUS oil @ 1 20˚ F )
12
Bypass pressur e
higher than priorit y
Priority pressur e
higher than b ypass
Pressure - psi
Flow - L/min (21,8 cSt oil @ 49˚ C )
P
T
Bypass
G
Priority
flow
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 K-221.A
An Eaton Brand
K
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1 Function
PFRR - Pressure compensated
priority ow control with relief
on priority port
2 Size
8 - 8 size
3 Seal Material
Blank - Buna-N
V - Viton
®
Viton is a registered trademark of E.I.
DuPont
Code P, Bypass Priority, T Gauge Housing Number
3G 3/8" BSPP 3/8" BSPP 1/4" BSPP 02-178273
8T SAE 8 SAE 8 SAE 4 02-178274
Model Code
4 Relief Control
C - Cap
K - Knob
S - Screw
5 Valve Housing Material
A - Aluminum
1 2 3 4 5 6 7 8 9 10
9 Flow Setting
Customer must specify ow:
0.4 - 8L/min (0.1 - 2.5 USgpm)
10 Special Features
00 - None
(Only required if valve has special
features, omitted if "00".)
6 Port Size
7 Pressure Range
Note: Code based on pressure
in psi.
3 - 3-20 bar (50-300 psi)
20 - 40-140 bar (600-2000 psi)
36 - 20-250 bar (300-3600 psi)
8 Pressure Setting -
user requested in 50 psi steps.
Example:
10 - 1000 psi
10.5 - 1050 psi
Cartridge Description Quantity
PFR5-8-F-0-** Priority flow regulator 1
RV1-8-*-0-** Relief valve 1
Composition Chart
Dimensions
mm (inch)
PFRR-8 - Flow Control
Pressure compensated, priority type, with relief on priority flow
15 L/min (4 USgpm) • 7-210 bar (100-3000 psi)
PFRR 8 (V) *
A ** **
/ ** **
00
– – – – – –
63,5
(2.50)
27,9
(1.10)
15,4 (0.61)
12,7 (0.50)
12,7 (0.50)
33,2 (1.31)
66,0 (2.60)
100,8 (3.97)
G
Bypass
P
PFR5-8-F-0-**
72,6
(2.86)
75,4
(2.97)
8,6 (0.34)
59,9
(2.36)
15,4 (0.61)
Pri
T
19,5 (0.77)
37,3 (1.47)
RV1-8-*-0-**
Ø 7,1 (Ø0.28)
thru 2 plcs.
