Bucher Hydraulics introduces the excavator pipe-rupture valve CFS-flat.
- Brings CFS (Compact Flow Control and Safety Valve) technology into a flat design
- Prevents uncontrolled lowering of actuator in the event of a pipe- or hose-rupture
- Holds actuator in its position when main valve is centered
- For use wherever so required by the standards ISO 8643, EN 474 and DIN 24093 for excavators with a lifting device (e.g. a load hook on the bucket)
- Can be used on machines in which a pipe-rupture on the actuators could produce a dangerous situation (e.g. machines for materials handling and demolition)
- Includes secondary pressure-relief function which protects actuator against overload
- Inlet and actuator ports are standard SAE flanged ports, allowing retrofitting to existing equipment
- Load-independent, pilot operated design
- Variations in load pressure – even right up to the maximum – have no effect on fine-metering characteristics and hydraulic performance
- Permits operation via small lowering pressures
- Maximum flow rate of 350 lpm (92.5 gpm)
- Maximum operating pressure of 420 bar (6091.6 psi)
- Low hysteresis enables constant calibration
- No dynamic seals in the main spool and in the pressure-relief valve
- Valve adjustment is integrated into hydraulic circuit which ensures excavator pipe-rupture function has no effect on hydraulic values already been set in the machine
- Features long service life and ability to use under varying operating conditions
- Crawler and wheel excavators are among the common machine applications in which the valve can be used
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