Wholesale Proportional Valve by ChangJia

Product Overview

- ChangJia Wholesale Proportional Valve is an electrically controlled hydraulic pressure-regulating valve that sets output pressure proportionally to an electrical command.

- It combines a proportional solenoid and an inductive position transducer in a pressure‑balanced valve housing with integrated electronics (recommended amplifier: VT-5003S30).

- Available pressure stages up to 31.5 MPa; compact (≈4 kg), IP65 protection and continuous-duty rated.

Product Features

- Electrical closed‑loop position control of spring pre‑tension using an inductive position transducer.

- Proportional solenoid actuation (pressure‑balanced) to convert the electrical command into accurate pressure output.

- Low hysteresis and high repeatability thanks to closed‑loop position feedback.

- Integrated valve and electronic control from one supplier for matched performance.

- Supports mineral oil or phosphate ester fluids (seal options NBR/FPM), wide viscosity and temperature ranges.

Product Value

- Precise, stable pressure control for improved machine/process performance and repeatability.

- Simplified system integration by providing valve and matched electronics together.

- Reduced maintenance and tuning effort because closed‑loop control compensates for friction and drift.

- Flexible pressure range options make it usable across many hydraulic systems without redesign.

Product Advantages

- High accuracy: hysteresis

- Fast dynamic response (typical 0→100% response ~100 ms for lower stages; up to ~150 ms for highest stage).

- Robust contamination tolerance (recommend ≤10 µm; acceptable

- Pressure‑balanced design and closed‑loop control eliminate solenoid friction effects and improve longevity.

- Durable electrical specification (24 V supply, IP65, continuous duty) suitable for industrial environments.

Application Scenarios

- Industrial hydraulic systems requiring proportional pressure control (presses, clamps, presses, and machine tools).

- Mobile and off‑road hydraulics where stable pressure under varying loads is needed (construction, agriculture, forestry).

- Test benches and process control systems that demand precise, repeatable pressure setpoints.

- Injection molding, die‑casting and other manufacturing equipment requiring accurate pressure regulation.

- Any machinery or system where integrated valve + electronics and reliable closed‑loop performance reduce setup and maintenance.