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Proportional
directional valve SC18

 

Featuring a smaller design and a flow range up to 260 l/min for each actuator section, the new SC18 load-sensing proportional valve complements the larger SC22, which offers flows of up to 400 l/min per section.

 

For many mobile applications - especially in the construction-machine sector - the demand for a compact valve with flows up to 260 l/min is growing constantly. The design features a mold casting and, in conjunction with a very high technical performance, results in a highly competitive product. Many optional auxiliary functions can also be integrated very compactly into the valve body. In addition to optimized flow-control behavior and a significantly improved load-sensing system, of particular interest is that the energy losses in the valve have been minimized. The concept even allows for the adoption of digital pilot heads.

 

Conclusion

 

The SC18 is an all-purpose sectional valve that, particularly in combination with closely related model ranges, is ideal for a wide variety of mobile applications.

 

Availability

 

Prototypes (electrohydraulic and pure-hydraulic pilot controls):
from 1st quarter 2012.

 
 
Size

Working pressure, max.

Rated pressure, max.

Tank line pressure, max.

Nominal flow rate

Viscosity range

Hydraulic fluid temperature

Types of operators

18

350 bar

420 bar (actuator ports)

50 bar

260 l/min

10 - 380 mm2/s

-20 to +80 °C

Electrical, hydraulic, manual,
or combinations of them

 
 

Important features

  • Compact sectional design

  • Load sensing

  • Adaptable modular system

  • Individual adjustment of the flow rate up
    to 260 l/min per actuator

  • Max. pump flow rate 400 l/min

  • Individual pressure compensators

  • Individual supply cut-off for each actuator port

  • Optional anti-shock valves, make-up valves, or a combination

  • Available with manual operation

  • Threaded ports or flanged ports

 
 

Your benefits

  • Can be used with all types of pumps and in systems with changeable supply sources
  • Responsive and accurate control of the load
  • Load-independent flow control, even with parallel operation of several actuators
  • Adaptable modules, specifically designed for use in mobile hydraulics