Description
The secondary flangeable elements EDM-VB-__ can be interfaced and bolted on top of the A and B ports of the ED elements of the Directional Valve Assembly.
They incorporate one or two Cross Piloted Counterbalance Valves which allow free flow toward the A and B outlet ports, and lock in a leak free mode the flow returning from the actuator. Pilot pressure in the opposite line reduces the pressure setting of the counterbalance valve in proportion to the pilot ratio (4:1) until opening and allowing the flow return from the actuator.
The pressure setting should be at least 1,3 times the highest expected load.
Depending on the version selected (02AB, 020A or 020B), the counterbalance function can be double-acting or singleacting, upstream or downstream, in both A and B ports, or in A port only, or in B port only (see hydraulic symbols).
The body of the EDM-VB elements is made of Black Anodized Aluminium. Hydraulic Ports A and B are size G 3/8.
For applications with different specifications consult us
