HBS Dual overcenter valves

Dual overcentervalves

The overcenter valves are employed to control the stop and the motion of one direction of an actuator (single overcenter valves) or both the directions (dual overcenter valves).

Functions:

- load lowering control: the lowering of the load is possible only if there is a pilot pressure from the other line; this operation ensures the oil supply of the cylinder preventing cavitation problems;

- containing of the pressure at the setting value, pressure relief for any pressure peaks caused by shocks or overloads; - arrest of the ﬂow (and of the load) when the pump is not working or the directional valve is in neutral position;

- free ﬂow for load lifting, with reduced pressure drops;

They consist of a body where are placed:

- check valve: it allows the ﬂow in only one direction;

- pilot piston: it permits to control the gradual opening of the relief valve;

- relief valve: it permits to limit the maximum pressure in the actuator, it withholds the load and controls its lowering during the opening of the valve by the pilot signal.

CODE

L/min

Description

Max press.

PDF

Body material

Conn.

Pilot

Click to enlarge image

A070261.22.00

30lpm

Dual overcenter valve

Zinc plated steel

500 Bar

G1/4"

4.1:1

A070361.01.00

A070361.02.00

A070361.03.00

A070461.01.00

A070461.02.00

A070461.03.00

45lpm

60lpm

Dual overcenter valve

Zinc plated steel

500 Bar

G3/8"

G1/2"

2.7:1

4.3:1

8.8:1

2.7:1

4.3:1

8.8:1

B070461.04.00

B070461.05.00

B070461.06.00

60lpm

Dual overcenter valve

Aluminum

350 Bar

G1/2"

2.7:1

4.3:1

8.8:1

A070300.11.00

A070300.12.00

B070300.11.00

45lpm

Dual overcenter valve

Zinc plated steel

Aluminum

500 Bar

350 Bar

G3/8"

4.84:1

6.83:1

4.84:1

6.83:1

A070400.11.00

A070400.12.00

A070400.14.00

80lpm

Dual overcenter valve

Zinc plated steel

500 Bar

G1/2"

4.84:1

6.83:1

8.2:1

A070600.11.00

A070600.12.00

B070600.11.00

140lpm

Dual overcenter valve

Zinc plated steel

Aluminum

500 Bar

350 Bar

G3/4"

4.4:1

8.2:1

4.4:1

8.2:1

A070366.01.00

A070366.02.00

A070366.03.00

A070466.01.00

A070466.02.00

A070466.03.00

45lpm

60lpm

Dual overcenter valve back pressure compensated

Zinc plated steel

500 Bar

G3/8"

G1/2"

2.7:1

4.3:1

8.8:1

2.7:1

4.3:1

8.8:1

A070306.11.00

A070306.12.00

A070306.13.00

45lpm

Dual overcenter valve back pressure compensated

Zinc plated steel

500 Bar

G3/8"

4.84:1

6.83:1

9.5:1

A070406.11.00

A070406.12.00

A073906.11.00

A073906.12.00

80lpm

Dual overcenter valve back pressure compensated

Zinc plated steel

500 Bar

G1/2"

M22x1,5

4.84:1

6.83:1

4.84:1

6.83:1

B070461.08.00

60lpm

Dual overcenter valve back pressure compensated

Aluminum

350 Bar

G1/2"

10:1

A070606.11.00

A070606.12.00

B070606.11.00

B070606.12.00

140lpm

Dual overcenter valve back pressure compensated

Zinc plated steel

Aluminum

500 Bar

350 Bar

G3/4"

4.4:1

8.2:1

4.4:1

8.2:1

B070661.01.00

140lpm

Dual overcenter valve back pressure compensated

Aluminum

350 Bar

G3/4"

10:1

A070311.00.00

40lpm

Dual overcenter with flow control

Zinc plated steel

500 Bar

G3/8"

4.84:1

A070411.01.00

60lpm

Dual overcenter with flow control

Zinc plated steel

500 Bar

G1/2"

4.84:1

A070311.03.00

45lpm

Dual overcenter with flow control

Zinc plated steel

500 Bar

G3/8"

4.3:1

A070361.55.00

45lpm

60lpm

Dual overcenter with pilot setting

Zinc plated steel

500 Bar

G3/8"

G1/2"

4.3:1

11:1

4.3:1

11:1

A070461.22.00

80lpm

Dual overcenter for hydraulic motor

Zinc plated steel

500 Bar

G1/2"

4.2:1

B070600.01.00

120lpm

Dual overcenter valve

Aluminum

350 Bar

G3/4"

3:1

B070461.09.00

150lpm

Dual overcenter valve

Aluminum

380 Bar

G1/2"

4:1

A070800.01.00

200lpm

Dual overcenter valve

Zinc plated steel

350 Bar

G1"

7:1

B070466.01.00

150lpm

Dual overcenter valve

Aluminum

350 Bar

G1/2"

4:1

A070351.01.00

45lpm

Dual overcenter with flow control pressure compensated

Zinc plated steel

350 Bar

G3/8"

4.2:1

B070361.15.00

45lpm

Dual overcenter with flow control pressure compensated and cross-over relief

Aluminum

350 Bar

G3/8"

1:1

A070461.59.00

60lpm

Dual overcenter with flow control pressure cross-over relief

Zinc plated steel

450 Bar

G1/2"

4.25:1

A070461.57.00

60lpm

Dual overcenter with relief on C2 line

Zinc plated steel

400 Bar

G1/2"

4.25:1

A070606.13.00

140lpm

Dual overcenter pressure compensated with relief on C1 line.

Zinc plated steel

400 Bar

G3/4"

4.25:1

B070461.07.00

60lpm

Dual overcenter with ZERO differtial.

Aluminum

400 Bar

G1/2"

11:1

B070481.34.00

60lpm

Dual overcenter with ZERO differtial.

Aluminum

400 Bar

G1/2"

11:1