Bucher CFS-flat Pipe-Rupture Valve

The CFS-flat pipe-rupture valve prevents uncontrolled lowering of an actuator in the event of a pipe- or hose-rupture.

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