Valves
Valve models
Model series
CVM120 / 2WD
CVM120 / 4WD
CVU200 / 2WD
Maximum flow rate (P->T)
120 l/min
200 l/min
Flow-rate limitation (in ATC function
(A1-B1 / A2-B2)*
2WD: 55 l/min / motor
40 l/min / motor (option) *
4WD: 28 l/min / motor
100 l/min / motor
80 l/min / motor (option) *
Compatible with fixed displacement
pump
●
Compatible with load-sensing (LS)
pump
●
●
Hill descent control (HDC function)
O (option)
Valve order code
2WD without HDC:
CVM120-A1H0T0V12S00
2WD with HDC:
CVM120-A1H1T0V12S00
4WD without HDC:
CVM120-A2H0T0V12S00
4WD with HDC:
CVM120-A2H1T0V12S00
2WD without HDC:
CVU200-A1H0T0V12S00
* Contact the motor manufacturer or its representative to order a valve for reduced
flow.
Valve functions
CVM120 and CVU200 valves have the in-built functions that follow:
• Mode change between the freewheeling and driving modes
• Drive direction control
• Motor 2-speed function control
• Flow limitation for Assisting traction control (ATC)
• Proportional pressure level control
• Proportional Hill descent control (HDC) (available in selected valve models).
When a wheel slips, the ATC function gives up to 50% of the maximum flow of the
valve to the wheel that slips. In the 4WD systems the maximum flow for each wheel is
25% of the maximum flow of the valve. In order to keep the pressure for the wheels
that have better grip, the pump must supply sufficient flow to the wheel that slips.
CVM120 and CVU200 2WD valves are available with reduced flow capacity. With this
option the ATC functions also on reduced flow capacity. Contact the motor
manufacturer or its representative about this option.
4.2
4.2.1
4.2.2
System design
12
Product manual