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Double-acting Overcentre Valves

Controlled movements of cylinders tipping over, or motors

Quantity
Available to order


Description

DOUBLE-ACTING OVERCENTRE VALVES

Applications

- These valves are used to control and block the cylinders movements to enable the following functions.
- Controlled lowering of the load: prevents the load from becoming the driving element,
and the overcentre valve prevents the cylinder from cavitating.
- Limit the pressure within the cylinder in the event of shocks created by an overload or pressure peaks created by the pump
(requires the utilisation of open centre spool valve).

Specifications

- Zinc-plated bi-chromate steel body.
- Factory setting: 320 bar.
- Adjust the valve to at least 1.3 times the load pressure to enable a quick closure.

Max. flow
at input
(l/min)		Max.
pressure
(bar)		Pilot
ratio		DimensionsWeight
(kg)		Reference
V1, V2,
C1, C2		 L
mm		 L1
mm		 L2
mm		 L3
mm		 L4
mm		 L5
mm		 L6
mm		 H1
mm		 H2
mm		 H
mm		 S
mm
20 350 1:4.5 1/4"BSP 150 248 50 110 30 50 44 32 28 60 30 1.968 BVD014TDNX1
40 350 1:4.5 3/8"BSP 150 248 50 110 30 50 44 32 28 60 30 1.944 BVD038TDNX1
60 350 1:4.5 1/2"BSP 150 248 50 110 30 50 44 32 28 60 30 1.886 BVD012TDNX1
95 350 1:5.5 3/4"BSP 190 320 65 143 44 62.5 64 40 40 80 35 3.820 BVD034TDNX1

Connections

C1; C2 : Cylinder
V1; V2 : Spool valve

ATTENTION!

The valve alone does not hold the load in one position if the actuator has internal leakage (especially for hydraulic motor).
For applications that require safe long-term positioning, a mechanical brake must also be applied in addition to the valve!

Product Details
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