Travel Pilot Valve (With Damper) Outline And Specifications - Kubota KX080-3 Workshop Manual

WSM KX080-3 Mechanism
E.Travel pilot valve (with damper)
a. Outline
The damper-embedded pilot valve, RCVD8C, is a reducing-type valve using 4 secondary-pressure-control-
ling reducing valves contained in a single valve casing. The outlet pressure varies according to the angle of
the operating section. The RCVD8C also includes a damping mechanism coupled to the valve casing, a
mechanism which prevents hunting (lever-hunting) in the man-machine system.
In addition to a damping mechanism, the RCVD8CC also includes shuttle valves which select and output
higher pressure from secondary pressures.
b. Specifications
Maximum primary pressure
Secondary pressure
Allowable back pressure
Rated flow volume
Operating angle
Mass
Piping
Filter
9.8 MPa 100 kgf/cm
0-4.4 (maximum control pressure) MPa
2
0-45 kgf/cm
At maximum 0.29 MPa 3 kgf/cm
10 L/min
12.4°
Approx. 7.8 kg per set
For favorable response, the internal diameter and
the length of the pipe should be approx. 8 and 3
mm respectively. To prevent an effect of the back
pressure, return the return oil to the tank directly.
To prevent the spool from being stuck, install a 40-
mesh or more filter at the inlet of the P port.
IV-M-66
IV Hydraulic System
2
2