A11VO190/260 Integrated Control Valve Pilot Hydraulic Control For Metallurgical Equipment
Product Introduction
This integrated control valve for Rexroth A11VO190/260 swashplate axial piston pumps integrates constant power (LR), pressure cut-off, load-sensing (LS) and differential pressure compensation, designed for open circuits. With a rated pressure of 350 bar and peak pressure of 400 bar, it adopts pilot hydraulic control to achieve stepless displacement adjustment from 0 to Vgmax, accurately matching high-power pump operating conditions and providing stable pressure and flow output for high-pressure heavy-load systems.
Product Summary
Hydraulic valves are the "control center" of a hydraulic system, responsible for regulating and controlling the direction, pressure, and flow of hydraulic oil, thereby ensuring that hydraulic actuators (such as cylinders and hydraulic motors) function as intended. Hydraulic valves are generally classified into three main categories based on their function: directional control valves, pressure control valves, and flow control valves. In addition, there are some combination valves and special-purpose valves.
Product Parameters
| Items |
Specification |
| Compatible Pump |
Rexroth A11VO Series |
| Types |
Replacement parts for hydraulic piston pump |
| Model No. |
LRDS/LRDU2 |
| Function |
Completely interchangeable with original pump |
| Parts name |
Control valve |
| Processing technic |
Cutting, lathe, machining center, heat treatment, grind, honing, burring and so on |
Product Application
This pump control valve is mainly suitable for construction machinery (large excavators, crawler cranes, concrete pump trucks), mining machinery (heavy roadheaders, mining dump trucks), metallurgical equipment (forging machinery) and port machinery (container cranes). Especially ideal for high-power hydrostatic transmission systems, it ensures efficient and stable equipment operation in high-pressure heavy-load environments with variable working conditions.
Product Features
1. Load-sensing control for high energy efficiency.
2. Pressure limiter function for system safety.
3. Good dynamic response and control stability.
4. Modular design for easy integration and service.
5. Suitable for high-pressure applications (up to 350 bar+).
1. Insufficient Flow/ Pressure: Check load-sensing line (X-port) for blockage or leakage; verify pressure limiter setting; inspect pump displacement mechanism.
2. Unstable Pressure (Hunting): Check for air in the system; inspect damping orifices in control lines for blockage; verify stability of load signal.
3. Pump Not Returning to Standby: Check control piston for sticking; inspect control spring for damage; verify load-sensing line is not pressurized during standby.
4. Excessive Noise/ Overheating: This may indicate cavitation or excessive Δp setting. Check inlet conditions and charge pressure; adjust Δp setting.
5. External Leakage: Inspect seal kits at port connections and housing interfaces; replace worn seals.
Company Profile
Hebei Runhe Hydraulic Co., Ltd. is a professional manufacturer and supplier with over 12 years of experience in the hydraulic industry. We specialize in a comprehensive range of hydraulic pump control valves, including the A11VO series, as well as A6VM series and so on. The pumps and motors compatible with leading brands such as Parker and Rexroth are also supported. We also provide designing and producing custom hydraulic cylinders to meet precise application requirements.
Our team is always available to assist with technical support and product inquiries. Please feel free to contact us at any time.
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