Q1: What is load sensing (LS)? What benefits does it bring to my equipment?
A: Load sensing is an energy-saving technology. The multi-way valve can sense the actual load pressure required by the actuator (cylinder/motor) and feed it back to the hydraulic pump, enabling the pump to only provide a pressure slightly higher than the load pressure. This significantly reduces throttling and overflow losses. The benefits are: lower fuel consumption, slower increase in hydraulic oil temperature, and higher system efficiency.
Q2: My device needs to perform multiple actions simultaneously. How can I prevent "traffic competition" from causing the actions to become sluggish?
A: Our MVS series comes with anti-flow saturation function (such as the LUDV system) as standard. When the total flow rate of the pump is insufficient to meet the requirements of all the simultaneously operating actuators, the system will reduce the speed of all the actuators proportionally instead of allowing the lighter-load actions to proceed first. This ensures the coordination and predictability of multiple compound actions, improving operational accuracy and safety.
Q3: My equipment has limited space. Could you please tell me the installation dimensions of this multi-way valve?
A: The MVS series adopts a compact modular design, which saves up to 40% of installation space compared to the traditional discrete valve pipeline connection method. You can provide us with your space constraints when making the selection, and our engineers will recommend the most suitable installation configuration for you.
Q4: I'm engaged in equipment upgrade and modernization. How can I ensure that this valve is compatible with my existing hydraulic system?
A: We offer free selection support services. All you need to do is provide the key parameters of your existing system, such as the pump's displacement and maximum pressure, the number and requirements of the actuators, and the control method (manual lever/electro-pneumatic handle), etc. Our engineers will confirm the compatibility for you and provide an adaptation plan.
Q5: What is the protection level (IP rating) of this valve? Can it be used in harsh environments?
A: The protection level of the standard type proportional electromagnetic iron is IP65, which can effectively prevent dust from entering and water spraying, and is fully suitable for the harsh working environments of construction machinery and agricultural machinery. For applications with higher requirements, electromagnetic irons with IP67 level can be provided.
Q6: Does your company offer after-sales support and spare parts services?
A: Yes, we offer comprehensive technical support and after-sales services, including installation guidance, fault diagnosis and operation training. We guarantee a stable supply of spare parts to ensure the continuous and stable operation of your equipment.
Q7: What specific requirements do load-sensing systems have for hydraulic pumps?
A7: The load-sensing system can achieve its maximum efficiency when used in conjunction with a variable piston pump (with an LS load-sensing pressure cut-off valve). The pump will automatically adjust the angle of the swashplate based on the pressure feedback from the LS, thereby changing the displacement.
Q8: What are the electrical interface and control signals of the electro-hydraulic proportional multi-way valve?
A8: The commonly used connector is the DIN plug that complies with the ISO 4400 standard. The control signals are typically 0 to ±10V voltage signals or 4 to 20mA current signals, and they can be directly connected to the mainstream PLCs and controllers available on the market.
Q9: How to diagnose common faults of multi-way valves?
A9:All actions are slow and weak: Check the main safety valve of the system and whether the output of the hydraulic pump is normal.
Abnormal single linkage action: Check whether the linkage valve core is stuck, whether the corresponding pilot pressure has been established, and whether the resistance of the proportional solenoid is normal.
Severe system overheating: Check whether the feedback oil circuit of the load sensitivity is blocked, and whether the main safety valve opens prematurely or does not close tightly.
Q10: Can your company provide customized services?
A10: Yes. We offer in-depth customized services, including but not limited to: special oil port layout, integration of specific function valves, modification of neutral position, adaptation to the customer's dedicated controller, etc. Please provide your detailed technical requirements, and we will tailor the solution for you.
