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Directional Control Valves

Directional Control Valves
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Directional Control Valves

Product catalog summary
Directional Control Valves Overview
This document provides an overview of solenoid and manual directional control valves, detailing their specifications, features, and operational guidelines. The valves are categorized into solenoid valves with various configurations and manual valves, each tailored for specific operational needs.
Main Specifications
  • Solenoid Valves: Includes SS, SA, SE, DSS, SF, and SAW series, with flow rates from 7.9 to 158.5 gpm and pressure ratings up to 5076 psi.
  • Manual Valves: The DMA series offers flow rates between 10.6 to 19.8 gpm and a pressure rating of 3571 psi.
SS Series Features
  • Long Life: Wet type solenoid design ensures lubrication and reduces impact, enhancing durability.
  • Low Noise: Quiet operation due to low core switching noise.
  • High Capacity: Large capacity with minimal pressure loss due to fluid reaction force compensation.
  • Easy Maintenance: Special wiring box and plug-in type coil facilitate simple wiring and coil replacement.
  • Global Compatibility: Meets international safety standards (CE, UL, CSA).
Technical Specifications
  • Maximum Flow Rate: Varies by model, with specific rates provided for different configurations.
  • Pressure Ratings: Maximum working pressure is 35 MPa (5000 psi) for most models.
  • Environmental Conditions: Operating temperature ranges from -20 to 50°C, with fluid temperature up to 70°C.
  • Mounting and Installation: Detailed dimensions and torque specifications for mounting bolts are provided.
Operational Guidelines
  • Ensure the tank line is always filled with oil to prevent surge pressure issues.
  • Maintain clean hydraulic oil and adhere to specified contamination levels.
  • Do not exceed the permissible voltage range for the solenoid coils.
  • Provide appropriate drain piping for certain valve spool types.
Electrical and Wiring Details
  • Includes wiring diagrams and electrical circuit specifications for AC and DC solenoids.
  • Details on solenoid coil types, drive and holding currents, and allowable voltage ranges are provided.
Performance and Response
  • Pressure loss characteristics and switching response times are outlined, with performance curves provided for different operating conditions.
SE Series Overview
The SE Series solenoid valves are pilot-operated directional valves with low power consumption, designed for low current operation, allowing direct drive by programmable controllers. They feature minimal coil temperature rise, reducing the risk of coil burnout.
Installation Instructions
Emphasizes proper grounding and torque specifications for connectors, including the use of G screw conversion adapters.
Operational Guidelines
Maintain a minimum pilot pressure of 0.4 MPa, ensure clean operating fluid, and avoid reverse flow configurations. Do not close the T (DR) port and handle surge pressures appropriately.
Maintenance and Precautions
Recommendations include using appropriate operating fluids and ensuring system cleanliness. Advises on potential hydraulic lockup under prolonged high-pressure conditions and the need for constant energization in detent-type valves.
Diagrams and Tables
Includes cross-sectional drawings and tables listing sealing parts, O-ring specifications, and solenoid assembly details. Provides installation dimension drawings for both AC and DC solenoids.
Conclusion
The SE Series solenoid valves are versatile components suitable for various industrial applications, offering reliable performance with low power consumption. Proper installation and adherence to operational guidelines are crucial for optimal functionality.
Additional Specifications
Outlines operating conditions, fluid requirements, and electrical specifications. The valve operates at a maximum pressure of 21 MPa (3000 psi) and supports flow rates of 10, 20, and 40 liters per minute, requiring a 24V DC power supply with a maximum power consumption of 36W.
Procedures
Key operational procedures include maintaining clean operating fluid, controlling fluid temperature, and ensuring proper signal sequencing for electrical control.
Norms and Standards
Complies with JIS C0920 IP63 standards for dust and water resistance and aligns with ISO 4401 for installation dimensions.
Recommendations
Includes using oil-based hydraulic fluids and consulting an agent for fire-resistant fluids. Suggests adjustments for optimal operation, such as setting acceleration and deceleration times and adjusting flow rates using VR1 to VR5 controls.
Key Features
Features a monitoring switch for safety confirmation, crucial for machine integration and safety compliance with ISO 12100.
Installation and Maintenance
Provides installation dimensions for different series, with specific instructions for gasket mounting. Maintenance involves ensuring proper sealing with O-rings and using specified tightening torques for mounting bolts.
Performance and Control
Performance curves illustrate the relationship between flow rate and pressure, emphasizing operation within allowable flow rate ranges. Control waveforms and electrical wiring diagrams are provided to guide setup and operation.
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Catalog excerpts

Directional Control Valves-1

Directional Control Valves Photo Main Specifications Solenoid Valves Solenoid Valve Solenoid Valves Solenoid Valve (DIN Connector Type) Solenoid Valves Solenoid Valve (Low Current & Low Power Consumption Type) Solenoid Valves Solenoid Controlled Pilot Operated Valve Fine Solenoid Valves Fine Solenoid Valve (High-Low Valve) Solenoid Valves Solenoid Valve with Monitoring Switch Manual Valves Manually Operated Directional Valve

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Directional Control Valves-2

WET TYPE SOLENOID OPERATED DIRECTIONAL CONTROL VALVE SS Series(Wiring System: Central Terminal Box) Wet Type Solenoid Valve Features qVery long life The movable iron core of the wet type solenoid is immersed in oil, which keeps it lubricated and cushions it from impact and vibration, ensuring very long life. wLow switching noise The wet-type solenoid valve provides very low core switching noise, for quiet operation. eHigh pressure, large capacity, with minimal pressure loss Comprehensive fluid reaction force compen- sation and low pressure compensation construction provide large capacity and...

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Directional Control Valves-3

AC Solenoid Built-in Rectifier C* Maximum Working Pressure Maximum Allowable Backpressure Shockless Type Indicator light With manual push-button Shockless Option Standard Type Switches/min. Standard Built-in Rectifier Quick Return Double Solenoid Single Solenoid Ambient Temperature Operating Fluid Operating Environment Dust Resistance/Water Resistance Rank Mounting bolt Temperature Range Viscosity Range Filtration Size × Length Tightening Torque Note) 1. Maximum operating pressure depends on the valve type. For details, see page S-1. 2. For mounting bolts, use 12T or equivalent. Notes zPipe system...

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Directional Control Valves-4

• Solenoid Assembly Specifications '-Nominal diameter -Mounting method Wet type solenoid operated directional control valve

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Directional Control Valves-5

(Auxiliary Symbol Explanations) Shockless Type (Auxiliary Symbol: F) Features ¡Smooth start and stop performance ¡Quiet operation ¡Long life and reliable operations Surgeless type (Auxiliary Symbol: G) Effects ¡Eliminates shocks in the piping system. ¡Prevents the piping connections from leaking oil. ¡Extends the life of the hydraulic components. ¡Maintenance-free operation of the hydraulic system. Features ¡Suppresses the surge voltage. ¡Eliminates sparks between relay contacts. ¡Extends the life of the relay contact. Surge suppressor Effects ¡Improves the reliability of the control relay. ¡Extends...

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Directional Control Valves-6

Installation Dimension Drawings Holes for temporary nameplate or customer’s nameplate mounting holes for wiring. Recommended nameplate dimensions. Self-tapping screws for mounting; 3.5 x 10. (0.14 x 0.39) Note) SS-G01-H**-R**-E31 The solenoid is on the opposite side of that shown for SOLa in the illustrations shown here. 2 to G (Previously PF) 1/2 Manual push-button Space required for coil removal Space required for coil removal Gasket Surface Dimensions ISO 4401-03-02-0-94 JIS B 8355 D-03-02-0-94

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Directional Control Valves-7

Installation Dimension Drawings Holes for temporary nameplate or customer’s nameplate mounting holes for wiring. Recommended nameplate dimensions. Self-tapping screws for mounting; 3.5 x 10. (0.14 x 0.39) Note) SS-G03-H**-R-**-J21 The solenoid is on the opposite side of that shown for SOLa in the illustrations shown here. SS-G03-**-*R-**-21 117.5(4.63) 117.5(4.63) 55(2.17) 235(9.26) Space required for coil removal For sub plate SS-G03 Mounting bolt 135.5(5.33) 60.5(2.38) 196(7.72) 63(2.48) 271(10.67) Space required for coil removal Gasket surface dimensions ISO 4401-05-04-0-94 JIS B 8355 D-05-04-0-94...

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Directional Control Valves-8

Wiring Diagram Ground terminal Common terminals Ground terminal 1 .In the case of a double solenoid valve, a common terminal is provided to simplify wiring. When the common terminal is not used, remove the terminal screws. 2.Use the ground terminal when grounding is required. 3.In the case of a solderless terminal, M3 screws. 4.Tighten terminal screws to a torque of 0.5 to 0.7Nm {5.1 to Electrical Circuit Diagram

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Directional Control Valves-9

Performance Curves Hydraulic Operating Fluid Viscosity 32mm2/s Pressure Loss Characteristics Pump Type Flow Path Pump Type Switching Response Time Response Time (sec) Model No. Measurement Conditions Solenoid ON Spring Return Note) 1.The switching response time changes slightly with operating conditions (pressure, flow rate, viscosity, etc.) 2.In the case of power supply type E* (with built-in rectifier), the spring return time using Quick Return (option symbol: Q) is the same as D*.

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Directional Control Valves-10

Pressure − Flow Volume Allowable Value Standard Form, with AC, DC solenoid Size Operation Example Operation Symbol Shockless Type, with DC solenoid Operation Example Operation Symbol Note) 1.Letter in parentheses is for AC solenoid. 2.Letter in parentheses is for solenoid with built-in rectifier (E*), but without Quick Return, and for DC solenoid (D*) with surge voltage absorbing diode on the electrical circuit. Flow rate r/min Flow rate r/min

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Directional Control Valves-11

Pressure − Flow Volume Allowable Value Standard Form, with AC Solenoid Operation Symbol Standard Form, with DC Solenoid A Flow rate r/min Flow rate r/min Pressure MPa{kgf/cm } Pressure MPa{kgf/cm } Shockless Type, with DC solenoid Operation Symbol 140 A Flow rate r/min Pressure MPa{kgf/cm } Note) 1.Letter in parentheses is for solenoid with built-in rectifier (E*), but without Quick Return, and for DC solenoid (D*) with surge voltage absorbing diode on the electrical circuit. 2.There is no shockless type for the AC solenoid (C*), so use a solenoid with built-in rectifier (E*) when shockless operation...

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Directional Control Valves-12

List of Sealing Parts Part Name Part Number Single Solenoid Double Solenoid Note) 1A and 1B are JIS Standard B 2401, while AS568 is SAE standard. Part Name Body Plug Spool Retainer A Retainer B Retainer C Spacer Spring A Spring C Nut Part Name Rod Solenoid guide Solenoid coil Packing Terminal box kit Nameplate O-ring O-ring O-ring O-ring Seal Kit Number Single Solenoid Double Solenoid

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Directional Control Valves-13

O-ring O-ring Double Solenoid Note) 1A and 1B** indicate JIS Standard B 2401-1A/1B-**. Single Solenoid Double Solenoid Single Solenoid Double Solenoid Part No. Type/Part Number Part Name List of Sealing Parts Part No. Part Name Body Plug Spool Retainer Retainer B Spacer Spring Nut Rod Solenoid guide Solenoid coil Packing B Coil case Part Name Coil yoke Terminal box kit Nameplate O-ring O-ring O-ring O-ring

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