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