Best Hydraulic Solenoid Valve Wholesaler in China​ Company

Product Overview

1) Product overview

Product Features

- A range of proportional hydraulic flow-control valves supplied by CHONGQING CHANGJIA INTERNATIONAL TRADING CO., LTD, designed for precise, pressure- and temperature-compensated flow regulation.

Product Value

- Available in multiple size ratings (flows up to 25 L/min depending on type) and rated for service pressures up to 21 MPa.

Product Advantages

- Manufactured without recycled materials, submitted for certification, and intended for industrial and mobile hydraulic applications.

Application Scenarios

2) Product features

- Proportional solenoid actuation with an inductive position transducer providing electrical position feedback and closed-loop control.

- Integrated pressure compensator to hold pressure drop across the measurement orifice constant (load-compensated flow).

- Axially adjustable transducer coil for easy zero-point adjustment without touching the electronics, rectifier sandwich plate enabling bidirectional flow control, and optional check valve for free return flow.

- Built-in safety: measurement orifice closes on 0% command, power loss, or position-transducer cable break; electrical amplifier supports ramping to avoid start-up jumps.

3) Product value

- Delivers accurate, repeatable flow control for improved process consistency and machine performance.

- Reduces system tuning time and maintenance through feedback control and simple zero adjustment.

- Enhances system safety and reliability by failing to a closed state and offering low leakage and tight repeatability, supporting higher productivity and lower operating risk.

4) Product advantages

- High precision: repeatability

- Robust operating range: viscosity 2.8–380 mm²/s, fluid temperature -20 to +70 °C, and filtration recommendation ≤20 μm.

- Practical control features—adjustable ramping to prevent start-up jumps, axially movable transducer coil for easy adjustment, and IP65-rated amplifier for protected electronics.

- Low leakage and load-compensated performance ensure stable flow under varying pressures and loads.

5) Application scenarios

- Industrial hydraulic systems requiring precise metering (presses, machine tools, test benches).

- Mobile and construction machinery where load-compensated proportional flow improves controllability.

- Process and production equipment such as injection molding, material handling, and hydraulic servo systems.

- Any application needing reliable, compact proportional flow control with closed-loop feedback and safe fail-close behavior.