MCV105C3023 | Danfoss EDC Pilot Valve 225psi 650psi

MCV105C3023 & MCV116A3204

Product Overview

The MCV105C3023 and MCV116A3204 are core electro-hydraulic control valve components from the Danfoss / Sauer-Danfoss MCV series, widely used for displacement control of Danfoss medium duty pumps and Series 90 variable displacement pumps.

MCV105C3023:

The MCV105C3023 is a Danfoss MCV105C series Electric Displacement Control (EDC) module—a two-stage electrohydraulic pump stroke control device. The first stage is a Pressure Control Pilot (PCP)—a torque motor-actuated double-nozzle flapper valve that produces a differential output pressure proportional to the applied electrical signal. The second stage uses this differential pressure to drive a linear motion piston, which actuates a rotary spool through a cam and ports oil to the pump servo piston. The MCV105C EDC uses mechanical feedback to establish closed-loop control of the swashplate angle of Danfoss 46 cc medium duty pumps. Material Number: 11164081.

The MCV105C3023 directly replaces the MCV105B series. The product features environmentally resistant design: silicone oil-filled torque motor prevents moisture condensation, environmentally sealed first/second stage interface, and full environmental testing.

MCV116A3204:

The MCV116A3204 is a Danfoss MCV116 series Pressure Control Pilot (PCP) valve—a torque motor-actuated double-nozzle flapper valve. As a self-contained closed-loop pressure control valve, the pilot stage utilizes internal hydraulic pressure feedback to achieve closed-loop regulation. Mounted directly on the pump housing, this valve converts 4-20 mA electrical signals into proportional pilot differential pressure to adjust the pump swashplate angle and regulate pump displacement and output flow. The MCV116A3204 is widely used for original assembly, equipment overhaul, and spare parts replacement of Danfoss Series 90 variable displacement piston pumps (90R/90L).

As original Danfoss / Sauer-Danfoss control valve components, the MCV105C3023 and MCV116A3204 offer complete interchangeability within their respective series, requiring no modifications to mounting interfaces or hydraulic piping layouts.

Technical Specifications

MCV105C3023 Specifications:

• Model: MCV105C3023

• Material Number: 11164081

• Brand: DANFOSS / SAUER-DANFOSS

• Series: MCV105C Series

• Function: Electric Displacement Control (EDC)

• Valve Type: Two-stage electrohydraulic pump stroke control, torque motor-actuated double-nozzle flapper valve

• Compatible Pumps: Danfoss 46 cc Medium Duty Pumps

• Supply Pressure: 225 psi (Approx. 15.5 bar)

• Load Pressure: 650 psi (Approx. 44.8 bar)

• Coil Resistance (Single Coil): Approx. 23 Ω

• Coil Resistance (Dual Coil): Approx. 20 Ω

• Drive Type: Current-Driven

• Mounting: Pilot Mounting

• Body Material: Cast Iron

• Environmental Shock: 50 G’s for 11 milliseconds

• Humidity Test: 95% ± humidity at 49°C (120°F) for 10 days

• Weight: Approx. 1.8–2.0 kg

MCV116A3204 Specifications:

• Model: MCV116A3204

• Brand: DANFOSS / SAUER-DANFOSS

• Series: MCV116 Series

• Function: Pressure Control Pilot (PCP)

• Valve Type: Torque motor-actuated double-nozzle flapper valve

• Control Type: Electro-hydraulic proportional control, closed-loop pressure regulation

• Input Control Signal: 4-20 mA DC

• Power Supply: 24 VDC

• Maximum Operating Pressure: 350 bar

• Maximum Flow: 60 L/min

• Compatible Pumps: Danfoss Series 90 Variable Displacement Piston Pumps (90R/90L)

• Body Material: High-strength aluminum alloy

• Working Medium: Anti-wear mineral hydraulic oil

• Working Temperature: -20°C to +80°C

• Weight: Approx. 1.8–2.0 kg

• Installation: Direct plate mounting on pump head

• Structural Features: Torque motor-nozzle flapper closed-loop structure, good control linearity, strong anti-vibration and anti-contamination performance

Key Technical Advantages

1. High-Precision Torque Motor Control

The MCV series features a torque motor-actuated double-nozzle flapper valve configuration, delivering superior dynamic response frequency and lower hysteresis compared to conventional solenoid designs. The torque motor consists of an armature mounted on a torsion pivot suspended in the air gap of a magnetic field, precisely regulating output torque through control current. Internal hydraulic pressure feedback makes the pilot stage a self-contained closed-loop pressure control valve.

2. Two-Stage Electrohydraulic Control Architecture (MCV105C3023)

The MCV105C3023 employs a two-stage electrohydraulic control architecture: the first stage is a pressure control pilot valve that produces differential pressure proportional to the input signal; the second stage uses this differential pressure to drive a linear motion piston, which actuates a rotary spool through a cam mechanism. This two-stage separation allows the MCV105C EDC to achieve both the null deadband required for safety and excellent dynamic response characteristics.

3. High-Pressure High-Flow Control Capability (MCV116A3204)

The MCV116A3204 delivers 350 bar pressure control capability with 60 L/min flow capacity. This performance places it at the forefront of pressure control pilot valves in its class, making it suitable for precise displacement control of demanding high-pressure, high-flow variable pump systems.

4. Superior Environmental Durability

The MCV105C3023 torque motor features silicone oil filling to prevent moisture condensation. The first/second stage interface is environmentally sealed, and the product has passed comprehensive environmental testing including 50 G shock testing, 95% humidity (49°C/10 days) testing, and mobile equipment vibration testing.

5. Modular Integrated Design

The MCV116A3204 mounts directly on the pump head, converting 4-20 mA electrical signals into proportional pilot differential pressure to adjust pump swashplate angle. The compact modular layout reduces external piping and fitting requirements, minimizing system leakage risk and installation space requirements.

6. Excellent Control Linearity and Anti-Contamination Performance

The MCV116A3204 features a torque motor-nozzle flapper closed-loop structure with good control linearity, strong anti-vibration and anti-contamination performance. Even in mobile equipment vibration and shock environments, stable control precision is maintained.

Application Areas

• Construction Machinery Hydraulics — Electric displacement control of variable pumps in excavators, loaders, and mobile equipment

• Danfoss Series 90 Pump Control — Precise displacement control for 90R/90L series pumps

• Danfoss 46 cc Medium Duty Pump Control — MCV105C3023 EDC control for 46 cc medium duty pumps

• Road Construction and Mining Equipment — Hydraulic systems for road rollers, pavers, and mobile mining equipment

• Injection Molding Machinery — Displacement proportional regulation in pump-controlled systems

• Die-Casting Machines — Pressure and flow closed-loop control in variable pump systems

• Marine and Port Machinery — Variable pump control for steering gears and winch hydraulic systems

Expert Maintenance Tips

1. Installation Guidelines

• MCV116A3204 mounts directly on the pump head—pay special attention to alignment with locating pins during installation to prevent spool sticking due to misalignment.

• MCV105C3023 mounts on the pump head pilot manifold—ensure accurate alignment during installation.

• Thoroughly clean the mounting surface and all ports before installation to prevent foreign particles from entering the pilot valve and causing nozzle blockage or flapper sticking.

2. Hydraulic Fluid Cleanliness

• MCV series pilot valves incorporate precision nozzle-flapper mechanisms that are highly sensitive to fluid cleanliness.

• Recommended fluid: Anti-wear mineral hydraulic oil.

• MCV116A3204 operating temperature range: -20°C to +80°C.

• Install a return line filter with minimum 10 μm filtration rating.

3. Electrical Connection Specifications

• MCV116A3204 is a 4-20 mA current-driven device—use a compatible current control amplifier; do not connect directly to a voltage source.

• Power supply: 24 VDC.

• Shielded cables are recommended for command signal connections to prevent electromagnetic interference affecting control precision.

4. Periodic Maintenance Inspection

• Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.

• Check electrical connectors for looseness, oxidation, or moisture ingress.

• If response lag or reduced control precision is observed, first check system fluid cleanliness and pilot screens for blockage—nozzle-flapper mechanism contamination is the most common cause of performance degradation.

• The torque motor assembly must not be disassembled by end users; any repairs should be performed by qualified hydraulic service professionals.