7
FG/FCG-02 Model Series – Application Data
Functional Symbols
FCG–02
AB
AB
FG–02
General Information
FG/FCG valves provide precise
adjustable control of flow rates in
hydraulic circuits. They are pressure
and temperature compensated to
minimize flow variation resulting from
changes in fluid pressure and
temperature. They can be used in
meter-in, meter-out and bleed-off
circuits, and are completely
interchangeable with previous designs.
Application Guidance
Flow Adjustment
Flow rate is adjusted by rotating the dial.
A lettered (“A” through “E” ) indicator
marks approximately 4 1/2 revolutions,
from a fully closed to a fully opened
position.
Maximum throttle openings may be
limited by addition of spacers to the
throttle shaft under the selector dial.
Trim Adjustment
This optional feature permits an
adjustment of the flow setting when the
valve locking device is in a locked
position. Clockwise rotation increases
the flow, counterclockwise decreases
the flow.
Range of Adjustment
F*G–02–1500 & F*G–02–2300
8% of flow setting
F*G–02–300
3% of flow setting
Valve Locking
A standard key-locking device (2 keys
furnished) is supplied with these valves.
An optional device is also available.
Instead of using the key, the valve is
removed from its mounting to open the
access hole, which is on the front of the
valve. The valve is then returned to its
mounting and the new setting is made.
Then the access hole can be covered
using a screwdriver in the keyhole and
turning clockwise to trip the lock.
Subplate and Bolt Kits
Valves, subplates and mounting kits
must be ordered separately.
For example:
One (1) FG-02-1500-5* Valve
One (1) FGM-02-20 Subplate
One (1) FGM-02X-20 Subplate
One (1) BKFG-02-640 Mounting
Bolt Kit (Bolt length = 2 inch)
Maximum recommended mounting bolt
torque: 34,5 Nm (305 lb. in.)
Mounting bolts, when provided by a
customer, must be SAE grade 7,
or better.
Ratings
Maximum Flow Capacity (based on oil
viscosity of 150 SUS @ 100 F)
F*G-02-2300-* * -5
37690 cm
3
/min (2300 in
3
/min)
F*G-02-1500-* * -5
24580 cm
3
/min (1500 in
3
/min)
F*G-02-300-* * -5
4916 cm
3
/min (300 in
3
/min)
Nominal Reverse Free Flow
FCG-02-*- * * -5 only
56,7 lpm (15 USgpm)
Maximum Operating Pressure
248 bar (3600 psi)
Minimum Pressure Differential
Between Inlet and Outlet Ports
F*G-02-2300-* * -5
12 bar (175 psi)
F*G-02-1500-* * -5
10 bar (150 psi)
F*G-02-300-* * -5
7 bar (100 psi)
Pressure Drop
Pressure drop for reverse free flow over
check valve.
Volume lpm
(USgpm)
Pressure
bar (psi)
19 (5) 3 (45)
38 (10) 8 (120)
57 (15) 12 (175 )
76 (20) 20 (290)
95 (25) 30 (440)
NOTE: The pressures in the pressure drop
chart give approximate pressure drops (DP)
when passing a flow of 100 SSU fluids having
0.865 specific gravity.
For any other viscosity, the pressure drop
(DP) will change as follows:
Other Viscosity
% of DP from table
(approx.)
75 93
150 111
200 119
250 126
300 132
350 137
400 141
Specific gravity of fluid may be obtained
from its producer. For fire resistant
fluids, the value is higher than for oil.
Fluids and Seals
The use of synthetic fire-resistant fluids
requires a valve with special seals. Add
the prefix “F3” to the model number
when phosphate esters type fluids or its
blends are to be used with standard
seals. Refer to Vickers data sheet 694 ,
“Hydraulic Fluids and Temperature
Recommendations for Industrial
Machinery.
Weights
Valve 3.8 kg (8.5 lbs.). . . . . . . . . . . . . . .
Subplate 2.27 kg (5.0 lbs.). . . . . . . . . . .
8
Model Code
3 51 2
1
2
Special Seals
Omit if not required
F3 – Special seals for use with
phosphate ester type fluids
Type
F – Flow control
C – Integral check
G – Manifold or subplate mounting
Nominal Valve Size
02 – 1/4”
Flow Range
300 – (2 to 300 in
3
/min)
1500 – (10 to 1500 in
3
/min)
2300 – (10 to 2300 in
3
/min)
Lock Option
Blank – Standard Lock
L – Tamper resistant lock
3
4
6
4
Trim Adjustment Option
Omit if not required
Design Number
Subject to change
Installation dimensions remain
the same for design numbers
50 through 59.
Special Feature
S10 – Overspeed control
S32 – Tamper resistant flow adjustmen
t
6 7 8
5
7
8
9
Performance Data
Typical Pressure Compensation
0 1000 2000 3000
0
100
200
300
in
3
cm
3
1600
3300
4900
psi
bar0 69 138 207
F*G–02–300–50
0 1000 2000 3000
0
500
1000
1500
Flow/min
in
3
cm
3
8200
16400
25000
Valve Pressure Drop
psi
bar0 69 138 207
F*G–02–1500–50
0 1000 2000 3000
0
1000
2000
3000
in
3
cm
3
16400
33000
49000
Valve Pressure Drop
psi
bar0 69 138 207
F*G–02–2300–50
4000
278
Valve Pressure Drop
Flow/min
Flow vs Dial Reading
0
100
200
300
Flow/min
in
3
cm
3
1600
3300
4900
F*G–02–300–50
ABCDE
Dial Reading
Range
Flow/min
in
3
cm
3
F*G–02–1500–50
ABCDE
Dial Reading
Range
0
500
1000
1500
8200
16400
25000
Flow/min
in
3
cm
3
F*G–02–2300–50
ABCDE
Dial Reading
0
1000
2000
3000
16400
33000
49000
Flow/min
Low Flow Pressure Compensation (Minimum to 69 bar (1000 psi) valve pressure drop)
Model Flow cm
3
/min (in
3
/min) Typical Variation (%) Maximum Variation (%)
F*G–02–300–**5* 33 (2)
164 (10)
5%
3%
15%
10%
F*G–02–1500–**5* 164 (10) 8% 15%
Flow Variation with Temperature, 27C to 66C (80F to 150F)
Flow cm
3
/min (in
3
/min) Average Variation (%) Maximum Variation (%)
32,8 (2.0) 7.5% 15%
163,8 (10.0) 5.5% 10%
1638,7 (100.0) 3.8% 7%
4916 (300.0) 3.0% 5%
12290,3 (750.0) 3.0% 5%
24581 (1500.0) 3.0% 5%
10
Installation Dimensions
FG/FCG–02 Model Series
millimeter (inch)
27,6
(1.09)
25,9
(1.02)
7,9
(0.31)
Hex key
47,8
(1.88)
Dia.
71,4
(2.81)
80,26
(3.16)
62,0
(2.44)
49,3
(1.94)
41,1
(1.62)
Selection Dial
79,2
(3.12)
2,3
(.09)
27,7
(1.09)
full out position
111,25
(4.38)
6,35
(0.25)
6,35 (0.25) rest pin
(see subplate for location)
Mounting Surface
clearance required to remove key
0.344 dia thru 0.50 c’bore – 0.31 deep
4 holes for mounting
(see subplate for location)
101,6
(4.00)
46,7
(1.84)
95,25
(3.75)
38,1
(1.50)
Revolution indicator
A
Port B
Access hole is covered when unit is locked.
Lock screw is accessible when unlocked. Loosen to
change dial setting.
9,7
(0.38)
Radius
Standard lock option
BA
Port A
Unlocked position
Locked position
Trim adjustment option for
F*G–02–****–*T–5* Models
To cover access hole,
turn clockwise
To uncover access hole, remove cover,compress
spring, and turn counterclockwise
Model No. Port A Port B
FCG-02-*** -5* Inlet connection for regulated flow or outlet
connection for reversed free flow.
Outlet connection for regulated flow or inlet
connection for reversed free flow.
FG-02-****-5* Inlet connection Outlet connection
11
Subplate
101,6
(4.00)
133,4
(5.25)
114,3
(4.50)
8,73 (0.344) dia thru
12,70 (0.50) c’bore,
7,870 (.31) deep
4 places for mounting
0.281 dia. – 0.31
deep
for rest pins
0.44 R
23,9
(0.94)
82,55
(3.25)
71,4
(2.81)
58,7
(2.31)
30,22
(1.19)
System connection “D”
Dia. thru 2 holes “E”
NPTF Thd (from rear)
.3125–18 UNC–2B Thd. Thru
4 holes for mounting valve
76,2
(3.00)
9,7
(0.38)
22,4
(0.88)
79,5
(3.13)
20,6
(0.81)
millimeter (inch)
FGM–02(X)–20
Subplate
Model Code
D
mm (inch)
“E” NPTF
Thd.
FGM–02–20 14,27 (0.562) 3/8
FGM–02X–20 17,48 (0.688) 1/2
Not Recommended
NOTE:
When the subplate is not used, a machined
pad, as indicated by the shaded area on the
subplate, must be provided for mounting.
The pad must be flat within 0.0005 inch and
smooth within 63 microinch. Mounting bolts,
when provided by the customer, must be SAE
grade 7 or better.
12
Special Features
Over Speed Control, –S10
The flow control hydrostat under zero
flow conditions is spring offset to its full
open position. This permits an initial flow
greater than the throttle setting, and
may result in a momentary over speed
at the start of the feed cycle.
If this condition causes a problem in
your application, it can be greatly
reduced with the over speed control
option, –S10.
The –S10 features a screw which can
be adjusted to limit the hydrostat
opening to a point just above the
maximum flow requirements of the
system.
Adjust the hydrostat as follows:
1. Back out the adjusting screw and
operate the system in the feed mode.
Adjust the throttle setting to the desired
flow rate.
2. Turn in the adjusting screw until the
feed rate drops, then back out the
adjusting screw just enough to restore
the original feed rate. The screw will
remain in this position.
Tamper Resistant Flow
Adjustment, –S32
To adjust the flow, the valve must be
removed from its mounting. Install the
valve back on its mounting with the
cover removed using four 5/16–18 x 2
long socket head screws (not supplied
with valve, must be SAE grade 7
or better).
To obtain correct screws, order
separately as follows:
(1) BKFG–02–640 mounting bolt kit.
Loosen set screw in flange of throttle
shaft and rotate shaft clockwise to
increase flow or counterclockwise to
decrease flow. When desired flow is set,
tighten set screw in flange of throttle.
Remove valve from mounting surface,
replace cover and remount valve with
the four 5/16–18 x 3.25 long screw
provided with the valve.
Mounting surface
5/16–18 x 3.25 long
Socket head screw
Four supplied with valve
3,05
(0.12)
84,8
(3.34)
max.
6.35 (0.25) Dia. rest pin furnished
Knurled
dial
Set screw
95,25
(3.75)
76,2
(3.00)
82,55
(3.250)
101,6
(4.00)
38,1
(1.50)
9,65 R
(0.38)
Port B
Stop
Port A
Stop
62,0
(2.44)
clearance for
standard hex key
31,75
(1.25)
full out
position
Located at right hand side of valve
as you face the dial.
25,9
(1.02)
27,7
(1.09)
22,2
(0.875)
4,78
(0.188)
hex key
–S10 feature adjustment
Clockwise rotation
decreases maximum flow
Counterclockwise rotation
increases maximum flow.
