The demands placed on a modern hydraulic system in mobile working machines are varied. Control blocks from ARGO-HYTOS provide the flexibility necessary for efficient solutions. Different designs, sizes and control strategies can be combined to reach an application-specific optimum.
The control block is divided into three sections: standard catalog products for flow rates up to 25 l/min, application-specific control block with screw-in and flangeable valves (UNF¾,7/8 and ISO-4401), and sandwich sections from modular systems, nominal size 6.
In general, there are two types of consumers in mobile machines: consumers that are actuated and operated frequently or permanently during operation, and consumers that are used rarely or sporadically.
Only in rare cases are the permanently operated consumers supplied with maximum pressure at all times, so a LS circuit in conjunction with a control pump for these functions is often the chosen solution.
Switching from the LS system to the constant pressure system takes place in the central inlet section by means of a ¾ UNF screw-in valve. By operating the 3/2-way valve, the control pump is supplied with control pressure and opens; it supplies the control block with the preset maximum pressure.
