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Directional Control Valve
User guide
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Danfoss Directional Control Valve User guide

Directional Control Valve
Technical Information
powersolutions.danfoss.com
Directional Control Valves Technical Information:
Contents
Circuit options ................................................................................................................................................. 3
Capability .......................................................................................................................................................... 3
Actuation options .......................................................................................................................................... 3
Modular valves ................................................................................................................................................ 4
FLUIDS AND FILTRATION
Fluids ................................................................................................................................................................... 5
Base stock and additives ........................................................................................................................ 5
Viscosity ........................................................................................................................................................5
Filtration ....................................................................................................................................................... 5
Return line filtration ................................................................................................................................. 5
Cleanliness ..................................................................................................................................................5
Typical performance .....................................................................................................................................7
Inlet covers order code ................................................................................................................................. 8
Inlet porting and relief valve options......................................................................................................9
Mid-inlet flow dividers and combiners order code ..........................................................................10
Mid-inlet flow dividers and combiners.................................................................................................11
Outlet covers order code ...........................................................................................................................12
Outlet porting and plug options ............................................................................................................13
Work section order code .....................................................................................................................14-17
Circuit types....................................................................................................................................................18
Spool types .....................................................................................................................................................19
Actuation options ................................................................................................................................. 20-21
Cabling and electrical options for actuator types G, H, and J ......................................................22
Actuation mounting side ..........................................................................................................................22
Spool centering and detent options .............................................................................................. 23-24
Auxiliary valves .......................................................................................................................................25-26
Dimensions CDS 100 ...................................................................................................................................26
Dimensions CDS 60 .....................................................................................................................................27
APPENDIX 1  ORDER FORMS
2 | © Danfoss | March 2016
Spool valve order form ...............................................................................................................................28
CDS60 and CDS100 specification worksheet .....................................................................................28
CDS60 and CDS100 price worksheet ....................................................................................................28
520L0564 | BC00000105en-US0101
Directional Control Valves Technical Information:
Product overview
FLEXIBILITY OF DESIGN The Danfoss directional control valves are designed to give customer flexibility over a broad
range of flow and pressure capabilities. Actuator options include a range of levers, cable actuators, hydraulic and pneumatic pilot controls, two-axis joysticks, and electrohydraulic solenoids. Flow rates range from 0 to 100 l/min [26 US gal/min].
CIRCUIT OPTIONS
CAPABILITY
ACTUATION OPTIONS
• Parallel circuits
• Series circuits
• Tandem circuits
• Prioritay circuits
• Regenerative circuits
• Power beyond
• Flow rates from 0 to 100 l/.min [26 US gal/min]
• System pressure up to 250 BAR
• Up to 12 work sections
• 12 cm³/min [0.7 in³/min] leakage
• Handles and levers
• Mechanical two-axis joystick
• Spool ends
• ElectroHydraulic Control (EHC) on/off solenoid
• Cable control
• Pneumatic pilot control
• Dual spool ends
3 | © Danfoss | March 2016
520L0564 | BC00000105en-US0101
Directional Control Valves Technical Information:
Product overview
MODULAR VALVES
Valve model
CDS-100 100 [26] 1 to 12
CDS-60 60 [16] 1 to 12
20 [5] 40 [11] 60 [16] 80 [21] 100 [26]
l/min [US gal/min]
Number of Spools
Circuit Page
Parallel Tandem Series
Parallel Tandem Series
Indicates Maximum Working Pressure Rated At 210 bar [3000 psi]
4 | © Danfoss | March 2016
520L0564 | BC00000105en-US0101
Directional Control Valves Technical Information:
Fluids and Filtration
FLUIDS Hydraulic fluid performs three basic functions in a hydraulic system: It transfers energy,
lubricates moving components, and transports heat and contaminants out of the system.
Base stock and additives Danfoss valves are designed to operate with mineral-based fluids containing oxidation, rust, and foam inhibitors, compatible with fluoroelastomer seals. Consult your fluid supplier for information on seal compatibility.
Viscosity Viscosity is the most important property of a hydraulic fluid. It is a measurement of how the fluid resists flow. Low viscosity fluids increase internal leakage; high viscosity fluids increase pressure drop through the valve. Use a fluid that meets the viscosity limits published in this catalog. For specific requirements, see technical data in each section.
Temperature
Temperature affects a fluid’s viscosity. Higher temperature fluid has lower viscosity. Operating at excessive temperatures may have other detrimental effects on your hydraulic fluid. Design your hydraulic system to operate within the specified temperature range. Specific requirements are published in each section.
For more information For more information on hydraulic fluid selection refer to Hydraulic Fluids and Lubricants
Technical Information, Danfoss publication 520L0463.
FILTRATION
Effective filtration is critical to a hydraulic system’s performance and working life. Employ system filtration capable of meeting the published requirements in each valve section. Be aware that other components in the system may have more stringent requirements. Design your filtration system to satisfy the requirements of the most sensitive component.
Return line filtration Return line filtration is generally adequate for Danfoss valves. We recommend a 10 micron nominal (20 micron absolute) or finer filter. Insure the filter in your system is properly sized and maintained. To facilitate proper filter maintenance, use a pressure gauge or other indicator to signal when it is necessary to change the filter. Never allow filter to reach its bypass condition. Follow the filter manufacturer’s maintenance recommendations.
Cleanliness Hydraulic system contamination must not exceed the limits published for each valve. Limits are specified per ISO 4406 (1999). When measuring system contamination, calibrate test equipment in accordance with the ACFTD method.
For more information For more information on system filtration, refer to Design Guidelines for hydraulic fluid cleanliness, Danfoss publication 520L0467.
5 | © Danfoss | March 2016
520L0564 | BC00000105en-US0101
Directional Control Valves Technical Information:
CDS 60 and 100
CDS 100
SPECIFICATIONS
6 | © Danfoss | March 2016
CDS 60
Maximum flow (CDS 100) 100 l/min [26.4 US gal/min] Maximum flow (CDS 60) 60 l/min [15.8 US gal/min] Work pressure 210 bar [3050 psi] Maximum pressure 250 bar [3625 psi] Maximum pressure (outlet section) 40 bar [580 psi] Temperature range -40º to 80º C [-40 to 176º F] Recommended fluid type Mineral based hydraulic oil Recommended viscosity 26-55 mm²/sec (cSt) [123-255 SUS] Minimum fluid cleanliness (per ISO 4406) 19/16
520L0564 | BC00000105en-US0101
12 sections
11 sections
10 sections
Pressure - bar [psi]
Flow - l/min [US gal/min]
100
250
Pressure - bar [psi]
[26]
Flow - l/min [US gal/min]
12 sections
11 sections
10 sections
Pressure - bar [psi]
Directional Control Valves Technical Information:
CDS 60 and 100
TYPICAL PERFORMANCE
Based on oil temperature of 45°–50°C [113°–122° F]. Viscosity 32 mm²/sec (cSt) [151 SUS]. CDS spool leakage (standard) at 70 bar [1015 psi], 50°C [122°F], ISO VG46: 10 cm³/min [0.61 in³/min]
16
[232]
14
[203]
12
[174]
10
[145]
[116]
[87]
8
6
Pressure vs. flow curves for main relief valve
[3625]
200
[2900]
150
[2176]
100
[1450]
50
[725]
0
0102030405060708090
[2.6] [5.3] [7.9] [10] [13] [16] [19] [21] [24]
Pressure drop (P-T) CDS 100Pressure drop (P-T) CDS 60
16
[232]
14
[203]
9 sections
8 sections
7 sections
6 sections
5 sections
4 sections
3 sections
12
[174]
10
[145]
[116]
[87]
8
6
9 sections
8 sections
7 sections
6 sections
5 sections
4 sections
3 sections
7 | © Danfoss | March 2016
4
[58]
2
[29]
0
0 10 20 30 40 50 60
[2.6] [5.3] [7.9] [10] [13] [16]
Flow - l/min [US gal/min]
2 sections
1 sections
4
[58]
2
[29]
0
0 10 20 30 40 50 60 70 80 90 100
[2.6] [5.3] [7.9] [10] [13] [16] [19] [21] [24] [26]
520L0564 | BC00000105en-US0101
2 sections
1 sections
Directional Control Valves Technical Information:
CDS 60 and 100
INLET COVERS ORDER CODE
Inlet covers order code (example)
E60 A C 2 140/40*
Models
Code Description
E100 CDS100 E60 CDS60
Port locations
Code Description
A Top port B Side port, top port plugged C Top port, with side gauge port (9/16-18UNF) D Top inlet and outlet ports (use H, I, J on outlet)
Main relief valves
Code Description
A No valve, with plastic plug B No valve, with special plug C Valve, with direct valve and external adjustment D Valve, with direct valve and internal adjustment E* Valve, pilot operated and external adjustment
* on request
Port types
Code 1 2 3 4 5 7 8 X
SAE - ORB BSP - Parallel Metric - ISO 6149
Threads
Model CDS100
Model CDS60
Inlet outlet
Section
Inlet outlet
Section
#8
3/4 -16UNF
m m  m m m m
#10
7/8 -14UNF
m m  m m
#12
1 1/16-12UNF
3/8 -19 1/2 -14 M18x1.5 M22x1.5
m
m
available
m on request
Special porting, specify
8 | © Danfoss | March 2016
520L0564 | BC00000105en-US0101
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