Valves for earth moving machines
They are suitable to be used on excavators machines.
They are used to control the lowering of a load and the pilot pressure depends only from the spring preload and the piston area since they have no differential area.
The pilot pressure is normally achieved simultaneously from the manipulators pressure to drive the main spool valve.
For these valve it is not possible to determine a pilot ratio. They consist in a check valve that can be coaxial with the sealing plunger, a pilot piston and an auxiliary relief valve to cut off overload peaks.
The sealing plunger is piloted by the pressure downloaded by the relief valve. The valve is not affected by any back pressure in the V2 line. In case of damage of the manipulators, the lowering of the load can be performed manually, operating on the proper manual pilot screw.
Line T must be connected to the reservoir and without back pressure.
CODE
L/min
Description
Max press.
Body material
Conn.
Click to enlarge image
A060350.01.00
A060350.03.00M = G1/4"
40lpm
Valve for earth moving machines DX
Zinc plated steel
500 Bar
G3/8"
A060350.02.00
A060350.04.00M = G1/4"
40lpm
Valve for earth moving machines SX
Zinc plated steel
500 Bar
G3/8"
A060450.01.00
A060450.04.00M = G1/4"
100lpm
Valve for earth moving machines DX
Zinc plated steel
500 Bar
G1/2"
A060450.02.00
A060450.05.00M = G1/4"
100lpm
Valve for earth moving machines SX
Zinc plated steel
500 Bar
G1/2"
A060650.01.00
150lpm
Valve for earth moving machines DX
Zinc plated steel
500 Bar
G3/4"
A060650.02.00
150lpm
Valve for earth moving machines SX
Zinc plated steel
500 Bar
G3/4"
A068155.01.00
120lpm
Valve for earth moving machines
Zinc plated steel
500 Bar
1/2" SAE
6000
A068155.02.00
150lpm
Valve for earth moving machines
Zinc plated steel
500 Bar
1/2" SAE
6000
A068255.01.00
250lpm
Valve for earth moving machines
Zinc plated steel
500 Bar
3/4" SAE
6000
A068255.02.00
350lpm
Valve for earth moving machines
Zinc plated steel
500 Bar
3/4" SAE
6000
A068355.01.00
250lpm
Valve for earth moving machines
Zinc plated steel
500 Bar
3/4" SAE
3000
A068455.01.00
400lpm
Valve for earth moving machines
Zinc plated steel
500 Bar
1" SAE
6000
A068555.01.00
500lpm
Valve for earth moving machines
Zinc plated steel
500 Bar
11/4" SAE
6000
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