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Sectional Directional Valves, Series HDS...

 

 

Description

Series HDS directional control valves represents a flexible unit construction, the elements of which may be combined into one valve unit as required.

They are available in 8 different sizes, and with parallel, serial, serial/parallel,  Load Sensing and Flow Sharing circuitry. In addition, the range includes inlet and intermediate flow control sections with either manual or electro-proportional operators. Where accurate control of speed and actuator position is needed, the valves satisfy the most complex hydraulic circuit requirements.

Advantages

  •    -  Wide choice of hydraulic circuitry and maximum flexibility
  •    -  Electrical and mechanical operators can be combined in the same valve
  •    -  Spools can be customised with differing metering ranges
  •    -  By-pass solenoid valve and manual safety control in order to prevent unauthorised movement of actuators
  •    -  Wide range of valve sections with flow control and priority flow control


Technical Data

Type Number of sections Nominal flow rate l/min Max. inlet pressure (P) bar Max. work port press. (A/B) bar Data Sheet
HDS07 1 - 10 25 250 320 HDS07 200-P-991210-en
HDS11 1 - 10 45 250 320 HDS11 200-P-991210-en
HDS15 1 - 10 60 250 320 HDM,HDS15 200-P-991228-en
HDS16 1 - 10 60 290 320 HDS16 200-P-991238-en
HDS21 1 - 10 80 290 320 HDS21 200-P-991232-en
HDS24 1 - 10 130 280 320 HDS24 200-P-991240-en
HDS30 1 - 10 120 250 320 HDS30 200-P-991210-en
HDS34 1 - 10 180 300 350 HDS34 200-P-991227-en
  •    Fluid temperature: from -20 to +80 °C
  •    Viscosity operating range: 15 - 75 mm²/s (cSt)
  •    Max contamination level: 21/19/16 - ISO 4406:1999 (NAS 1638 class 10)
  •    Max contamination level for electro-hydraulic applications: 20/18/15 - ISO 4406:1999 (NAS 1638 class 9)


Models 

  •    -  With operation by manual lever, 2-spool combi-lever, flexible cable
  •    -  With spool-activated microswitch
  •    -  With ON-OFF solenoid operation
  •    -  With hydraulic, pneumatic, proportional hydraulic, electro-hydraulic and proportional electro-hydraulic operation
  •    -  With mechanical-release check valves in A/B ports
  •    -  With anti-shock and anti-cavitation relief valves in A/B ports
  •    -  Flow control sections with either manual or electro-proportional adjustment


Applications

  •    -  Tractors
  •    -  Agricultural machines
  •    -  Harvesting machines
  •    -  Earth-moving machinery