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FDC60 Series
Flow Divider Combiner
The FDC60 Flow Divider-Combiner will divide a single flow into two separate
flows which will always be in the same ratio to each other regardless of any
pressure differential between the two lines. If the flow is reversed (e.g. return
stroke of two cylinders) the return flows are held in the same ratio to each other
and combined into a single flow, regardless of individual loads on the cylinders.
A common application is to keep two cylinders (or motors) in close unison when
loads on them are unequal. The valves may also be used in series to operate
more than two circuits.
Specications
Maximum Rated Pressure: Up to 310 bar, 4,500 psi
Maximum Rated Flow: Up to 70 L/min, 18 US gpm
Ambient Temperature Range: -30 to 100°C, -22 to 212°F
Fluid Temperature Range: -30 to 100°C, -22 to 212°F
Compatible Fluids: Mineral oils to ISO 11158. Other fluids consult sales
office.
Accuracy: +/- 2% of valve rated maximum flow
Porting: BSPP, SAE, METRIC, NPTF
Material: Body materials: Grey cast iron & mild steel
Internal Materials: Hardened steel & high carbon spring steel
Seals: NBR
Fluid Cleanliness: Must be better than DIN ISO4406: 20/18/15 (NAS 1638
class 9)
Weight: 2.1 kg, 4.6 lb
Mounting: Three x 6.7mm through holes for bolt mounting
Features
● Pressure compensated to
keep the two split flows at
the same ratio regardless
of pressure variations
between them.
● Pressure compensation in
both forward (divide) and
reverse (combine) flows.
● Flows from 5 to 70 L/min
(1.3 - 18.5 US gpm).
● Unequal division of the
two split flows available.
From 50/50% to 90/10%.
● Maximum 12.5 bar (180
psi) pressure drop at
valves rated maximum
flow (see page 3).
● EN-GJL-250 cast iron
body and zinc plated with
clear trivalent end plugs.
No aluminium makes
it suitable for mining
applications.
FDC60-BU-ENG-2523.pdf - 10/25 - ISSUE 7.0
Symbol:
B
P
A
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Table 3: Split flow ratio****
CODE
FLOW RATIO
A PORT B PORT
50/50 50% 50%
55/45 55% 45%
60/40 60% 40%
65/35 65% 35%
70/30 70% 30%
75/25 75% 25%
80/20 80% 20%
85/15 85% 15%
90/10 90% 10%
****Other ratios available to special order
Table 2: Porting***
CODE P PORT A PORT B PORT
1 M18 x 1.5 M18 x 1.5 M18 x 1.5
2 M22 x 1.5 M18 x 1.5 M18 x 1.5
3 3/8" BSPP 3/8" BSPP 3/8" BSPP
4 1/2" BSPP 3/8" BSPP 3/8" BSPP
5 1/2" BSPP 1/2" BSPP 1/2" BSPP
6 7/8"-14UN #10 SAE ORB 3/4” -16UN #8 SAE ORB 3/4” -16UN #8 SAE ORB
7 M27 x 1.5 M22 x 1.5 M22 x 1.5
8 1/2" NPTF 1/2" NPTF 1/2" NPTF
***Other threads available to special order
Table 1: Flow size
CODE
FLOW RANGE L/MIN FLOW RANGE US GPM
(MIN - MAX) (MIN - MAX)
05 02 - 05 0.5 - 1.3
10 05 - 10 1.3 - 2.6
20 08 - 20 2.1 - 5.3
30 16 - 30 4.2 - 7.9
40 25 - 40 6.6 - 10.6
50 35 - 50 9.2 - 13.2
60 45 - 60 11.9 - 15.9
70** 55 - 70 14.5 - 18.5
**Code 70 (55-70 L/min) flow range will not function adequately at ratio’s
above 70/30
FDC60-BU-ENG-2523.pdf - 10/25 - ISSUE 7.0
SalesOrderCode
Please contact our technical sales team to discuss any special order requirements and custom configuration.
TYPICAL CODE DESCRIPTION SEE TABLE YOUR CODE
FDC60 FDC60 - Valve type - FDC60
10 Flow size Table 1
3 Porting Table 2
50/50 Split flow ratio* Table 3
* Division of split flows as a ratio
TypicalPressureDrop
All test completed with ISO32 mineral oil at 40˚C (32cst)
0
50
100
150
200
250
0
2
4
6
8
10
12
14
16
18
40% 50% 60% 70% 80% 90% 100% 110% 120%
Δp psi
Δp bar
Valve Rated Flow
Typical Pressure Drop
All tests completed with ISO32 mineral oil at 40˚C (32cst)
3
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FDC60-BU-ENG-2523.pdf - 10/25 - ISSUE 7.0
InstallationDetailsDimensions in millimiters (inches)
52.0
2.05
32.1
1.27
39.7
1.56
11.1
0.44
30.2
1.19
34.9 A/F
1.38
44.5
1.75
66.7
2.62
6.8 [0.27] THRU
3 PLACES
50.8
2.00
25.4
1.00
24.9
0.98
54.2
2.13
PORT B
PORT A
25.4
1.00
52.0
2.05
119.9
4.72
104.0
4.09
PORT P
ValveAccuracy
The division accuracy is specified as a percentage of the valves rated maximum flow. The accuracy of +/-2% defines a maximum difference
between the two split flows as 4% of the maximum flow. The same is true for both forward (divide) and reverse (combine) flows.
For a valve with rated flow size 10, the accuracy is calculated as +/-2% of its maximum flow 10 L/min (2.6 USgpm). This equates to a
maximum allowable difference between the two split flows of 0.4 L/min (+/-0.2 L/min), or 0.1 USgpm (+/-0.05 USgpm).
If the flow to the same valve is reduced to 5 L/min (1.3 USgpm), the accuracy is still specified as +/-2% of its maximum rated flow (10 L/
min, 2.6 USgpm).
For a valve with 50/50 split flow ratio, the two split flows are equal, and ½ of the total flow.
For a valve with 80/20 split flow ratio, the total flow is split with 80% going through A PORT & 20% going through B PORT. The accuracy of
+/-2% is still calculated from the valves rated maximum flow & then added to give a maximum variation of the two split flows.
See table below for further examples.
l/min US gpm l/min US gpm l/min US gpm from to from to l/min US gpm from to from to
2 0.5
1.0 / 1.0 0.25 / 0.25 0.9 / 1.1 1.1 / 0.9 0.22 / 0.28 0.28 / 0.22 1.6 / 0.4 0.40 / 0.10 1.5 / 0.5 1.7 / 0.3 0.37 / 0.13 0.43 / 0.07
5 1.3
2.5 / 2.5 0.65 / 0.65 2.4 / 2.6 2.6 / 2.4 0.62 / 0.68 0.68 / 0.62 4.0 / 1.0 1.04 / 0.26 3.9 / 1.1 4.1 / 0.9 1.01 / 0.29 1.07 / 0.23
5 1.3
2.5 / 2.5 0.65 / 0.65 2.3 / 2.7 2.7 / 2.3 0.6 / 0.7 0.7 / 0.6 4.0 / 1.0 1.04 / 0.26 3.8 / 1.2 4.2 / 0.8 0.99 / 0.31 1.09 / 0.21
10 2.6
5.0 / 5.0 1.3 / 1.3 4.8 / 5.2 5.2 / 4.8 1.25 / 1.35 1.35 / 1.25 8.0 / 2.0 2.08 / 0.52 7.8 / 2.2 8.2 / 1.8 2.03 / 0.57 2.13 / 0.47
8 2.1
4.0 / 4.0 1.05 / 1.05 3.6 / 4.4 4.4 / 3.6 0.94 / 1.16 1.16 / 0.94 6.4 / 1.6 1.68 / 0.42 6.0 / 2.0 6.8 / 1.2 1.57 / 0.53 1.79 / 0.31
20 5.3
10.0 / 10.0 2.65 / 2.65 9.6 / 10.4 10.4 / 9.6 2.54 / 2.76 2.76 / 2.54 16.0 / 4.0 4.24 / 1.06 15.6 / 4.4 16.4 / 3.6 4.13 / 1.17 4.35 / 0.95
16 4.2
8.0 / 8.0 2.1 / 2.1 7.4 / 8.6 8.6 / 7.4 1.94 / 2.26 2.26 / 1.94 12.8 / 3.2 3.36 / 0.84 12.2 / 3.8 13.4 / 2.6 3.20 / 1.00 3.52 / 0.68
30 7.9
15.0 / 15.0 3.95 / 3.95 14.4 / 15.6 15.6 / 14.4 3.79 / 4.11 4.11 / 3.79 24.0 / 6.0 6.32 / 1.58 23.4 / 6.6 24.6 / 5.4 6.16 / 1.74 6.48 / 1.42
25 6.6
12.5 / 12.5 3.3 / 3.3 11.7 / 13.3 13.3 / 11.7 3.09 / 3.51 3.51 / 3.09 20.0 / 5.0 5.28 / 1.32 19.2 / 5.8 20.8 / 4.2 5.07 / 1.53 5.49 / 1.11
40 10.6
20.0 / 20.0 5.3 / 5.3 19.2 / 20.8 20.8 / 19.2 5.09 / 5.51 5.51 / 5.09
32.0 / 8.0 8.48 / 2.12 31.2 / 8.8 32.8 / 7.2 8.27 / 2.33 8.69 / 1.91
35 9.2
17.5 / 17.5 4.6 / 4.6 16.5 / 18.5 18.5 / 16.5 4.33 / 4.87 4.87 / 4.33 28.0 / 7.0 7.36 / 1.84 27.0 / 8.0 29.0 / 6.0 7.10 / 2.10 7.62 / 1.58
50 13.2
25.0 / 25.0 6.6 / 6.6 24.0 / 26.0 26.0 / 24.0 6.33 / 6.87 6.87 / 6.33 40.0 / 10.0 10.56 / 2.64 39.0 / 11.0 41.0 / 9.0 10.30 / 2.90 10.82 / 2.38
45 11.9
22.5 / 22.5 5.95 / 5.95 21.3 / 23.7 23.7 / 21.3 5.63 / 6.27 6.27 / 5.63 36.0 / 9.0 9.52 / 2.38 34.8 / 10.2 37.2 / 7.8 9.20 / 2.70 9.84 / 2.06
60 15.9
30.0 / 30.0 7.95 / 7.95 28.8 / 31.2 31.2 / 28.8 7.63 / 8.27 8.27 / 7.63 48.0 / 12.0 12.72 / 3.18 46.8 / 13.2 49.2 / 10.8 12.40 / 3.50 13.04 / 2.86
55 14.5
27.5 / 27.5 7.25 / 7.25 26.1 / 28.9 28.9 / 26.1 6.88 / 7.62 7.62 / 6.88 44.0 / 11.0 11.60 / 2.90 42.6 / 12.4 45.4 / 9.6 11.23 / 3.27 11.97 / 2.53
70 18.5
35.0 / 35.0 9.25 / 9.25 33.6 / 36.4 36.4 / 33.6 8.88 / 9.62 9.62 / 8.88 56.0 / 14.0 14.80 / 3.70 54.6 / 15.4 57.4 / 12.6 14.43 / 4.07 15.17 / 3.33
US gpm
l/min
US gpm
5 +/-0.10 +/-0.03
Flow size
code
Min/Max flow
Accuracy +/- 2% of
Max. flow
Flow split @ 50/50
Flow Port A / B
Maximum variation
Flow Port A / B
Maximum variation
l/min
10 +/-0.20 +/-0.05
20 +/-0.40 +/-0.11
30 +/-0.60 +/-0.16
40 +/-0.80 +/-0.21
70 +/-1.40 +/-0.37
50 +/-1.00 +/-0.27
60 +/-1.20 +/-0.32
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®
reserve the right to make improvements and changes to the specification without notice
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®
, Make it BLUE
®
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®
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®
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®
and QuickCert
®
are registered trademarks of Webtec Products Limited.