PVEM24V/PVEO12V Actuator 157B4125 157B4128 157B4213 157B4216

Product Overview

The PVEM and PVEO series electro-hydraulic actuators are two core members of the Danfoss PVE Series 7 electro-hydraulic actuator family. The PVEM is a medium-performance proportional control actuator featuring closed-loop control, designed for work functions with medium performance demands. The PVEO is an ON/OFF non-proportional control actuator with open-loop spool control, primarily used for simple ON/OFF work functions where proportional speed or oil flow control is not required. Both employ 2-solenoid bridge technology with a new patented 3-way logic design, offering a simple and robust structure.

This product offers a complete range of 157B series electro-hydraulic actuators—including models 157B4125 (PVEM 24V) , 157B4128 (PVEM 24V) , 157B4213 (PVEO 12V) , and 157B4216 (PVEO 12V) —as direct drop-in replacement alternatives for original Danfoss PVE actuators. All actuators are manufactured to strict OEM specifications and undergo 100% real-world condition simulated testing, ensuring seamless integration with existing systems without any modification required.

Core Value Proposition:

• Direct Interchangeability: Full dimensional, interface, and electrical compatibility with original Danfoss PVE actuators

• 100% Simulated Condition Testing: Complete validation of response characteristics, insulation, and functionality under actual operating parameters prior to shipment

• PVEM Proportional Control: Closed-loop proportional control for medium-performance applications requiring flow regulation

• PVEO ON/OFF Control: Open-loop non-proportional control with simple structure and high reliability for switching-type functions

Technical Specifications 

Valve Family Compatibility

• PVG32 (PVEM / PVEO)

• PVG100 (PVEO)

Actuator Type

• PVEM: Medium-performance proportional control actuator (closed-loop)

• PVEO: ON/OFF non-proportional control actuator (open-loop)

Supply Voltage

• PVEM (157B4125 / 157B4128) : 24 VDC

  • Rated range: 22-30 VDC

  • New code: 11166829

• PVEO (157B4213 / 157B4216) : 12 VDC

  • Rated range: 11-15 VDC

Current Consumption (@ Rated Voltage)

• PVEM @ 24V: 350 mA

• PVEO @ 12V: 690 mA

Pilot Pressure

• 13.5 bar (standard PVE)

Control Signal

• PVEM: Proportional signal control

  • Signal voltage: 0.5 to 0.75 × U_DC

  • Signal current: 0.50 mA

  • Recommended PWM frequency: > 200 Hz

• PVEO: ON/OFF switching control

Input Impedance

• 12 kΩ

Connector Type

• 1×4 DIN 43650-A / ISO4400 (Hirschmann)

Protection Class

• IP65 (PVEM)

• IP65 / IP67 (PVEO)

Operating Temperature Range

• -30°C to +90°C (fluid temperature)

Weight

• PVEM: approx. 1.0 kg

• PVEO: approx. 0.99 kg

157B Series Model List

• 157B4125: PVEM electro-hydraulic actuator, 24V DC, 1×4 DIN connector

  • Type: PVEM (medium-performance proportional control)

  • Superseded by new code 11166829

  • Weight: approx. 1.0 kg

• 157B4128: PVEM electro-hydraulic actuator, 24V DC, 1×4 DIN connector

  • Type: PVEM (medium-performance proportional control)

  • New code: 11166829

  • Weight: approx. 1.0 kg

  • Dimensions: 11 × 9 × 5 cm

• 157B4213: PVEO electro-hydraulic actuator, 12V DC

  • Type: PVEO (ON/OFF non-proportional control)

  • Superseded by 157B4216 and 11166836

  • Protection: IP67

  • Weight: approx. 0.7–1.0 kg

• 157B4216: PVEO electro-hydraulic actuator, 12V DC

  • Type: PVEO (ON/OFF non-proportional control)

  • Connector: 1×4 DIN 43650-A/ISO4400

  • Connector direction: 90° (Up)

  • New code: 11166836

  • Replaces: 157B4212, 157B4213, 157B4296

  • Protection: IP65

  • Coil power: 8 W

  • Weight: 0.99 kg

  • On-stroke response: 225 ms

  • De-stroke response: 90 ms

  • Max oil consumption (steady state): 0 L/min

Key Technical Advantages

1. PVEM Closed-Loop Proportional Control — Precision Medium-Performance Flow Regulation
The PVEM actuator employs a closed-loop control architecture with built-in position sensors providing real-time spool position feedback, ensuring precise linear correspondence between electronic control signals and spool displacement. Compared to open-loop designs, the closed-loop configuration delivers significantly improved spool positioning accuracy and repeatability. PVEM offers 12-step proportional resolution, making it ideal for work functions with medium performance demands.

2. PVEO ON/OFF Non-Proportional Control — Simple and Efficient
The PVEO actuator is specifically designed for switching-type work functions, featuring open-loop spool control without complex proportional regulation circuits. This design significantly reduces system complexity and failure rates, making it particularly suitable for hydraulic actuators requiring only “ON/OFF” states, such as outrigger extension/retraction and attachment switching. PVEO is available in standard and ramp function (PVEO-R) versions.

3. Wide Voltage Adaptability
PVEM supports 11-32V DC wide voltage input, accommodating both 12V and 24V mainstream vehicle power systems. PVEO is available in 12V rated (11-15V range) and 24V rated (22-30V range) versions. Wide voltage design effectively accommodates voltage fluctuations in vehicle electrical systems, ensuring stable actuator operation during engine start-up and load transients.

4. Standardized Interface and Quick Replacement Capability
Both PVEM and PVEO actuators feature the 1×4 DIN 43650-A/ISO4400 (Hirschmann) standardized electrical interfaceand unified Danfoss PVE series mechanical mounting dimensions, enabling replacement within minutes. The 90° upward connector orientationfacilitates cable routing in compact valve stack spaces.

5. Rugged Protection and Extreme Environmental Tolerance
PVEM actuators feature IP65 protection, while PVEO actuators offer protection ratings from IP65 to IP67, effectively resisting dust ingress, high-pressure water jets, and humid environments. The operating fluid temperature range spans -30°C to +90°C, ensuring reliable electrical performance and mechanical actuation under extreme cold or high-temperature conditions.

6. Passive Fault Monitoring and Status Indication
PVEM actuators feature built-in passive fault monitoring with LED indicators for error state indication. When abnormal operating conditions are detected, the actuator can signal faults to operators or control systems via the LED indicator, enabling rapid problem localization.

Application Areas

• Mobile Cranes and Knuckle Boom Cranes: PVEM for precision proportional control of boom and telescopic functions; PVEO for outrigger extension/retraction and swing lock ON/OFF functions

• Aerial Work Platforms: PVEM for smooth proportional regulation of boom movements; PVEO for boom locking and safety interlocks

• Agricultural Machinery: PVEM for proportional control of tractor hydraulic hitch systems; PVEO for PTO engagement/disengagement

• Material Handling Equipment: PVEM for precise hydraulic system flow distribution on forklifts; PVEO for attachment switching and hydraulic locking

• Construction Equipment: PVEM for fine proportional control of attachment hydraulic tools; PVEO for switching-type hydraulic functions

• Industrial Hydraulic Systems: Electronic control drive for proportional valves and switching-type actuators on stationary equipment

Expert Maintenance Tips

1. Model Confirmation and Replacement Relationships
The PVEM/PVEO series has undergone multiple generational changes. Before installation, confirm the replacement relationship for your specific model:

• 157B4125 and 157B4128 have been superseded by new code 11166829

• 157B4213 has been superseded by 157B4216 and 11166836
  It is recommended to select the latest code models (11166829 replacing 157B4125/157B4128; 11166836 replacing 157B4213/157B4216) for long-term supply availability and after-sales support.

2. Electrical Connection Inspection
Prior to installation, verify that the 1×4 DIN connector terminals are intact, free from oxidation or deformation. Ensure the locking mechanism is fully engaged during connection to prevent loosening due to vibration. It is recommended to use protective boots or cable ties around the connector area to secure wiring and prevent terminal damage from cable strain.

3. Pilot Pressure Verification
Both PVEM and PVEO actuators require a stable pilot oil supply pressure for proper operation. Standard PVE actuators require 13.5 bar pilot pressure. IMPORTANT: Standard PVE electrical modules CANNOT operate at 25 bar pilot pressure! For higher pilot pressure requirements, select PVEO-HP or corresponding high-pressure modules. Verify that system pilot pressure meets actuator specifications before installation.

4. Supply Voltage Verification

• PVEM (157B4125/157B4128): 24V rated, verify voltage is within 22-30V range

• PVEO (157B4213/157B4216): 12V rated, verify voltage is within 11-15V range
  Measure the actual supply voltage with a multimeter before installation. Ensure voltage remains stable within the rated range with ripple not exceeding 5%—excessively high or low voltage may compromise actuator service life or cause functional abnormalities.

5. PWM Signal Requirements (PVEM)
PVEM is a proportional control actuator requiring PWM (Pulse Width Modulation) control signals. Recommended PWM frequency > 200 Hz. Excessively low or high PWM frequencies may affect spool positioning accuracy or cause abnormal actuator heating.

6. Spare Parts Strategy
It is recommended to keep 1-2 commonly used actuator models as on-hand spares. Thanks to the modular PVEM/PVEO actuator design, faulty units can be replaced quickly during short service interruptions, maximizing equipment availability. It is advisable to stock the latest code models (11166829 replacing 157B4125/157B4128; 11166836 replacing 157B4213/157B4216).