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.

PDF

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