FLOW CONTROLS
FD50-45 Flow Divider/Combiner . . . Heavy Duty,
DESCRIPTION
A heavy duty, multifunction, screw-in, cartridge-style, spool-type flow
divider/combiner.
OPERATION
In the dividing mode, the FD50-45 will divert input flow from port 3 to ports 2
and 4, based on the ratio specified, regardless of operating pressure. When the
flow direction is reversed the valve will combine flows from 2 and 4 to port 3.
Synchronizing flow is provided in both the dividing and combining modes at
“bottomed” conditions in cylinder applications and at “stalled” conditions in motor
applications.
FEATURES
• Hardened parts for long life.
• Quiet, modulated response.
• Wide operating flow range.
• Synchronizing in dividing and combining modes.
• Floating cage — high installation torque
• Industry common cavity.
RATINGS
Operating Pressure: 345 bar (5000 psi)
Burst Pressure: 1103 bar (16000 psi)
Flow Options:
Input Flow: 4 - 19 lpm (1 - 5 gpm); Ratio: 50:50; Model Code: 22
Input Flow: 5.5 - 26.7 lpm (5 - 7 gpm); Ratio: 50:50; Model Code: 33
Input Flow: 9.5 - 38 lpm (2.5 - 10 gpm); Ratio: 50:50; Model Code: 44
Input Flow: 11.5 - 41.5 lpm (3 -11 gpm); Ratio: 50:50; Model Code: 55
Input Flow: 15 - 45 lpm (4 -12 gpm); Ratio: 50:50; Model Code: 66
Input Flow: 19 - 57 lpm (5 - 15 gpm); Ratio: 50:50; Model Code: 88
Synchronizing Flow: Approximately 10% of maximum inlet flow
Flow Accuracy: 10% of inlet flow for Models 22, 33, 44, 55 and 66; 15% of inlet flow
for Model 88.
Temperature: -40 to 100°C (-40 to 212°F) for Buna N seals; -26 to 204°C (-15 to
400°F) for fluorocarbon seals; -54 to 107°C (-65 to 225°F) for polyurethane and
urethane seals.
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Note: Standard 10 size 4-way bodies can be used with this product with Port 1
plugged. See page 8.010.1 for special flow divider bodies.
Cavity: VC10-4; See page 9.110.1
Cavity Tool: CT10-4X; See page 8.600.1
Seal Kit: SK10-4X-MMM; SK10-2U-000 (urethane). See page 8.650.1
ISO SYMBOL
5.632.1
PERFORMANCE (Cartridge Only)
18.9/5
15.1/4
11.4/3
7.6/2
138
2000
207
3000
69
1000
276
4000
345
5000
PRESSURE DROP bar/psi
FLOW PER PORT lpm/gpm
Pressure Drop vs. Inlet Flow
4 to 2, Model Code 44, Dividing Mode
—— FL4; - - - FL2
32 cSt/150 sus oil at 40°C
3.8/1
Note: This new FD50-45 flow divider incorporates the features of the older
FDxx-40, FDxx-41 and FDxx-42 flow dividers in one product. It is designed
to supersede the older models. OEMs are encouraged to consider this
newer, more robust and versatile model for new applications.
HYDRAFORCE
.com
®
Blue rectangles are links to other catalog pages.
Cartridge: Weight: 0.11 kg. (0.24 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Ported Body: Ductile iron required for
operation over 207 bar (3000 psi).
Aluminum bodies are available for
lower pressure operation. FD-type
bodies recommended but a standard
4-way body may also be used with
Port 1 plugged. See page 8.010.1.
MATERIALS TO ORDER
FD50-45
- __ __ __ - __ - __ __
Dividing/Combining Ratio
22 50:50 rated @ 4-19 lpm
(1-5 gpm) input
33 50:50 rated @ 5.5-26.5 lpm
(1.5-7 gpm) input
66 50:50 rated @ 9.5-38 lpm
(2.5-10 gpm) input
55 50:50 rated @ 11.5-41.5 lpm
(3-11 gpm) input
66 50:50 rated @ 15-45 lpm
(4-12 gpm) input
88 50:50 rated @ 19-57 lpm
(5-15 gpm) input
FD50-45
5.632.2
DIMENSIONS
Multifunction
Seals
N Buna N (Std.)
V Fluorocarbon
P Polyurethane*
U Urethane*
* Required for operation over
240 bar (3500 psi); FD50 option.
®
HYDRAFORCE
HYDRAFORCE
.com
®
Ductile Iron, FD-Type
Body Shown
2.56
65.0
0.75
19.1
3.38
85.7
1.00
25.4
2.84
72.1
2.52
64.0
1.26
32.0
1.38
34.9
Thru 2
Places
ACROSS FLATS
0.28
7.1
1.99
50.6
1.36
34.6
0.31
7.9
2.00
50.8
0.28
7.1
48–52 ft-lbs (65–71 Nm)
Installation Torque:
Port
➀ is not used.
Ported Bodies
Cartridge Only 0
SAE 6 (all ports) 6TD
SAE 8 (all ports) 8TD
SAE 8 port 3;
SAE 6 ports 2 & 4 8DD
1/4 in. BSP* (all ports) 2BD
3/8 in. BSP* (all ports) 3BD
*BSP Body; U.K. Mfr. Only
Blue rectangles are links to other catalog pages.
