Usually, the working valve pieces are configured in groups, and the inlet valve block is equipped with a three-way pressure compensation bypass overflow valve. Logic element, when the directional valve of the multi way valve stops operating and each valve is in the middle position, the valve bypasses the main oil circuit flow with compensation pressure (6-12BAR). When a certain valve is operating, the bypass port of the valve decreases under the load pressure, providing the required flow rate according to the load pressure.
The load sensing shuttle valve transmits the load pressure of each working valve plate to the pressure compensation bypass overflow valve of the inlet valve block. Two way pressure compensation differential pressure reducing valve: When multiple working disc valves are working simultaneously, the load pressure is transmitted to the spring side of the valve. At this point, the negative feedback effect of the valve core is used to automatically adjust the pressure difference at both ends of the throttle valve port, keeping it basically unchanged. Under its action, the flow rate of each valve remains constant and is not affected by load changes. Mechanical design, machining, design software, mechanical engineer, equipment management, welding, hydraulic, casting, sealing, measurement, engineering machinery, powder metallurgy, bearings, gears, pump valves, industrial automation.
Safety relief valve: Usually used for limit protection of working mechanisms, such as variable amplitude oil cylinders.
Electromagnetic overflow valve: used for overload protection of working mechanisms, such as torque limit of cranes, three-turn protection, etc.
Proportional reducing valve: located on the opposite side of the working valve lever, it is a direct acting proportional reducing valve that drives the slide valve to achieve proportional reversing. Note: The proportional reversing of the direct acting proportional reducing valve is not good compared to manual proportional reversing, and its micro performance is not good. If used for applications with high flow control accuracy, the working valve plate with proportional servo drive configuration should be used. REXROTH, BUCHER, and DELTAPOWER all have servo driven proportional multi way valve directional valves.
Based on the place of use, purpose, and understanding of relevant regulations, specifications, standards, guidelines, and permits, the multi way directional valve can be selected to meet various requirements. Confirm the working conditions, applicable medium, working pressure, and medium temperature of the valve, determine the nominal diameter of the multi way directional valve that matches the pipeline: DN (mm), and determine the connection method with the pipeline: flange type, internal (external) threaded type, welding type, wafer type Clamp type, sleeve type, etc., determine the sealing performance requirements of the valve, the sealing level or sealing leakage of the multi way valve, and determine the protective coating requirements, packaging requirements, and transportation requirements of the valve.
