Bucher CFS-flat Pipe-Rupture Valve

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