Danfoss MCV Series Pilot Valve | MCV110A1017 MCV116A3214 | Pressure Control Pilot

The MCV Series Electro-Hydraulic Pressure Control Pilot (PCP) valves by Chengyuan Hydraulic are high-precision components fully compatible with Sauer-Danfoss industrial standards. Featuring models such as MCV110A1017 and the MCV116A3214/3502/3503 series, these valves serve as the critical interface for converting electrical signals into proportional hydraulic pilot pressure to drive main pump swashplate mechanisms. By utilizing high-performance magnetic materials and a low-hysteresis torque motor design, we ensure that our products meet OEM-level responsiveness and precision. Every pilot valve undergoes 100% simulated condition testing to guarantee stable performance under high vibration and wide temperature fluctuations.

Technical Specifications :

• Core Models: MCV110A, MCV116A

• Input Current Range: $0\text{ to } 200\text{ mA}$ (Typical pilot current)

• Max Control Pressure: $2.1\text{ MPa (21 bar / 300 psi)}$

• Max Supply Pressure: $3.4\text{ MPa (34 bar / 500 psi)}$

• Rated Flow: $1.9\text{ L/min (0.5 US gpm)}$

• Coil Resistance: $20\text{–}80\text{ \Omega}$ (Depending on suffix)

• Hysteresis: $\le 3\%$ (Ensuring high linearity)

• Operating Temperature: $-40\text{°C}$ to $+121\text{°C}$

• Electrical Protection: IP67 rated connectors or lead wires

Key Technical Advantages:

• Dual-Nozzle Flapper Torque Motor: The MCV series utilizes classic dual-nozzle flapper technology for exceptional sensitivity. Compared to standard proportional solenoids, torque motors provide lower hysteresis and higher dynamic response, significantly improving operator control “feel” in heavy machinery.

• Ultra-Precision Internal Honing: The clearance between the valve spool and sleeve is controlled to micron levels. This precision honing minimizes internal leakage, allowing for smooth pressure feedback even during low-displacement control phases.

• Corrosion-Resistant Coil Encapsulation: Designed for harsh outdoor environments, the coils are vacuum-sealed in epoxy resin. This provides superior resistance to vibration and salt spray, preventing electrical failures common in agricultural and construction equipment.

• Integrated Mechanical Zero Adjustment: Each MCV valve features an external mechanical zero-adjust screw. This allows technicians to fine-tune the initial pressure point post-installation to compensate for spring variances in different pumps, achieving perfect system synchronization.

Application Areas:

• Propel Systems: Displacement control for closed-loop pumps in rollers and pavers.

• Winches & Hoists: Precise speed regulation for hydraulic motors in drilling rigs and cranes.

• Harvester Drives: Pilot command control for hydrostatic transmissions in combine harvesters.

Expert Maintenance Tips:

• Fluid Cleanliness is Vital: The internal nozzles of the MCV valve have extremely small diameters and are easily clogged by micron-sized particles. Use absolute pressure filters rated at $10\mu\text{m}$ or better.

• Signal Isolation: To prevent electromagnetic interference from causing spool oscillation, use shielded twisted-pair cables for the connection between the controller and the MCV valve.

• Seal Integrity: When replacing the pilot valve, ensure the O-rings at the base are perfectly aligned. Tighten mounting bolts to $5\text{–}7\text{ Nm}$—over-tightening can cause housing deformation and spool sticking.