Controlled return valves

CONTROLLED RETURN VALVES

The controlled return valves are used mainly in the supportive hydraulic system of the mechanised mining covers.
The task of the valve blocks is to perform the assumed kinematic functions of the stand (expansion, pulling in) and maintenance of constant working support.

CONTROLLED RETURN VALVE DN10, DN12

CONTROLLED RETURN VALVE DN19

CONTROLLED RETURN VALVE WITH ADDITIONAL CONTROL DN10, DN12

CONTROLLED RETURN VALVE WITH ADDITIONAL CONTROL DN19

TWIN CONTROL RETURN VALVES

The twin controlled return valves are used in hydraulic systems of the mining cover section. The twin return valve is used when it is necessary to control two independent receivers simultaneously with the use of a common powering signal.

  TWIN CONTROL RETURN VALVES DN10, DN12

DOUBLE CONTROLLED RETURN VALVES

The double controlled return valves are used in hydraulic systems of the mining cover section. They are used to keep the support of the roof-bar and other servo-motors in the thrust state since they are required to keep the set working pressure in their chambers, both the sub-piston and over-piston ones. 
The double controlled return valves, due to their structure, perform two-directional movement of the support piston rod in combination with the control system..

DOUBLE CONTROLLED RETURN VALVE DN10

DOUBLE CONTROLLED RETURN VALVE WITH ADDITIONAL CONTROL DN10