Multiway Valve
Special multi way valve for 20t excavator
Features
Maximum flow :224L/Min
Maximum pressure :34.3Mpa
Hydraulic oil temperature :-20~90 ℃
Functional
1. The system adopts parallel oil ways and each actuator can work
alone or simultaneously.
2. When working, the check valve of each loop can prevent the oil
from flowing backward. In the middle position, the secondary
overflow valve can prevent air pockets and maintain the load.
3. The bucket arm loop can adopt separate oil supply or in
combination. When the oil is separately supplied, the bucket arm
movement can be precisely controlled. When the oil is supplied in a
combined way, the bucket arm cylinder can be quickly recovered to
prevent the generation of air pockets.
4. Special functions: straight traveling, rotation in priority,
bucket convergence, bucket arm lock, bucket arm regeneration, quick
bucket arm action.
5. The backup valve can be used for adding grabs and breaking
hammer etc.
Application
The HLMX15R multiway control valve is mainly used in 20~22-ton
hydraulic excavators to control the excavator boom, bucket arm,
bucket, traveling and rotating and to lift the excavator's boom,
extent and contract the bucket arm, load and unload the bucket,
rotate the upper part and drive the lower part of the excavator.
The multiway valve adopts a combination structure integrating
four-way reversing valve (right) and a five-way reversing valve
(left); the boom and the bucket arm cylinder are controlled with
two reversing valves respectively, which can realize various
operation speed. Main pump 1 (front pump) supplies pressure oil to
the left traveling and rotating mechanisms, boom 2, and bucket arm
1; main pump 2 (rear pump) supplies pressure oil to the right
traveling mechanism, the backup equipment, boom 1, the bucket and
bucket arm 2.
