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  • Load pressure independent flow control with
    • Open Center (OC) system for fixed displacement pump
    • Closed Center (CC) system for variable displacement pump
  • Flow-optimized valve design
  • High mechanical and electrical resolution
  • Compact size and low weight
Unit of Measure

Specifications

Brands

 HYDAC
Nominal Pump Port Flow Rate1 66 gpm250 L/min
Nominal Working Port Flow Rate2 42 gpm160 L/min

General Data and Operating Conditions

Number of Working Sections3 1 to 8

Installation Position

 Optional

Inlet Plate (CL17) Mass

 13.4 lb6.1 kg

Inlet Plate (UL17) Mass

 13.2 lb6.0 kg

Inlet Plate (UL17F) Mass

 13.0 lb5.9 kg

Optional Block (UD1) Mass

 0.9 lb0.4 kg

Optional Block (UW1) Mass

 2.4 lb1.1 kg

Working Section (B6) Mass

 11.2 lb5.1 kg

Working Section (LS6) Mass

 10.4 lb4.7 kg

Working Section (LS6F) Mass

 10.0 lb4.6 kg

Operation Unit (H) Mass

 0.9 lb0.4 kg

Operation Unit (E) Mass

 2.0 lb0.9 kg

Hand Lever (1/2/3) Mass

 0.2 lb0.1 kg

Optional Block (LD1) Mass

 0.7 lb0.3 kg

Optional Block (LW) Mass

 2.6 lb1.2 kg

Optional Block (LW1) Mass

 3.5 lb1.6 kg

End Plate (ER1) Mass

 8.8 lb4.0 kg

End Plate (ER2) Mass

 8.6 lb3.9 kg

End Plate (ER27) Mass

 9.3 lb4.2 kg

End Plate (ER2F) Mass

 8.6 lb3.9 kg

Open Block (E1C) Mass

 1.5 lb0.7 kg

Working Section (2) Tie Rod Mass

 0.7 lb0.3 kg

Working Section (4) Tie Rod Mass

 1.1 lb0.5 kg

Working Section (6) Tie Rod Mass

 1.5 lb0.7 kg

Working Section (8) Tie Rod Mass

 1.8 lb0.8 kg

Thread Connection Type

 BSPP (According to ISO 1179-1) SAE (According to ISO 11926-1 or SAE J1626)
Ambient Temperature4 -4 to 140 ºF-20 to 60 ºC
Hydraulic Fluid Temperature5 -4 to 176 ºF-20 to 80 ºC

Painting

 Standard Primer Top Coat RAL 9005 on Inquiry

Hydraulic Data

Nominal Flow Rate (P)

 66 gpm250 L/min

Nominal Flow Rate (A, B)

 42 gpm160 L/min

Nominal Pressure

 5076 psi350 bar

Maximum Operating Pressure at Port (P)

 5076 psi350 bar

Maximum Operating Pressure at Port (A, B)

 6092 psi420 bar

Maximum Operating Pressure at Port (T) for External Drained Tank Line Z

 435 psi30 bar

Maximum Operating Pressure at Port (T) for Internal Connection Z → T

 145 psi10 bar

Maximum Operating Pressure at Port (Z)

 Drained to Tank

Maximum Pilot Pressure at Port (C/X, Y)

 435 psi30 bar

Hydraulic Pilot Pressure

 94 to 290 psi6.5 to 20 bar

Electrohydraulic Pilot Pressure

 65 to 290 psi4.5 to 20 bar

Required Control Pressure (Δp) at Control Block

 247 psi17 bar

Hydraulic Fluid

 Mineral Oil (HL/HLP) According to DIN 51524 Other Hydraulic Fluids on Inquiry

Viscosity

 10 to 400 mm²/s

Maximum Permitted Degree of Contamination of the Hydraulic Fluid

 20/18/15 According to ISO 4406 (c)

Electrical Data

Direct Current (DC) Supply Voltage

 12 V24 V

Connector Type

 2-Pin AMP Junior Timer Axial

Protection Class

 Up to IP6K6

Connector Type with Mating Connector Mounted and Locked

 2-Pin Axial Deutsch DT04

Protection Class with Mating Connector Mounted and Locked

 Up to IPX9K

Note for Connector Type and IP Protection Class

 Mating plug-in connectors are not included.

General Information and Functional Description

General Information and Functional Description

 The LX-6 is a proportional directional control valve according to the load-sensing principle pre compensated.

The nominal flow rate to the working ports A and B is 160 l/min. The main spool 2.1 determines the flow direction and magnitude of flow rate.

Pressure control valves 2.4.3 and 2.4.4 are providing shifting pressure to the left and right side of the main spool 2.1 to control its position. The level of electric current determines the level of pilot pressure and therefore the position of the main spool.

Adjustable stroke limiters 2.4.1 and 2.4.2 can be set mechanically to limit the maximum flow rate to the working ports A and B.

The pressure compensator 2.7 keeps the flow rate to the actuator constant, even if the system pressure varies. Pressure changes at the pump or working ports A and B are compensated for each working section individually.

The maximum operating pressure can be adjusted by LS pressure limitation for working ports A and B separately.

Shock/anti-cavitation valves 2.3.2 protect the working ports A and B from pressure peaks. Anti-cavitation valves 2.3.1 protect the system from cavitation.

Shuttle valves are integrated into the working sections to signal the highest load pressure for the valve stack to the inlet plate or variable displacement pump.

Features

N/A

  • Modular design up to 8 working sections
  • Types of operation (with/without hand lever)
    • Hydraulic
    • Electrohydraulic (on/off, proportional)
  • Application-specific main spools with adjustable stroke limiter
  • Shock/anti-cavitation valves for protection of actuators
  • Adjustable load sense pressure limitation (mechanically or electro proportionally) causes the compensator to block flow to the working ports A or B independently
  • Direct-mounted option blocks for remote control of LS and pilot oil supply
  • End plates with additional pilot oil supply options
  • Areas of application
    • Cranes
    • Forestry
    • Lifting platforms
    • Municipal vehicles
    • Drilling machinery
    • Truck applications
    • Construction
    • Stationary applications
    • Agriculture

Note

N/A The technical data and characteristic curves were measured at a viscosity of 32 mm²/s.

  • 1 With compensator and load holding function
  • 2 With compensator and load holding function
  • 3 Deviation of data on inquiry only
  • 4 Deviation of data on inquiry only.
  • 5 Deviation of data on inquiry only.