PVEO/PVEO32 Actuator 11166743 11166829 11166824 157B4225 157B4228 157B4278 157B4218

Product Overview

The PVEO/PVEO32 series electro-hydraulic actuators are key members of the Danfoss PVE Series 7 electro-hydraulic actuator family. Unlike proportional control actuators such as PVEA, PVEH, and PVES, the PVEO is an ON/OFF non-proportional control actuator featuring open-loop spool control, primarily used to control simple ON/OFF work functions where proportional speed or oil flow control is not required.

The PVEO actuator employs 2-solenoid bridge technology with a new patented 3-way logic design, offering a simple and robust structure. It is available in two power variants: standard PVEO and PVEO-R with ramp function. The standard PVEO features a simple circuit of the PVE Series 7 actuator program with fixed 12 VDC or 24 VDC supply/signal voltage, plus a simple LED circuit for status indication.

This product offers a complete range of 157B series and 11xxxxx series electro-hydraulic actuators—including models 11166743, 11166829, 11166824, 157B4225, 157B4228, 157B4278, and 157B4218—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

• ON/OFF Non-Proportional Control: Simple structure with high reliability, ideal for switching-type work functions

• Wide Voltage Range & Multiple Connector Options: Supports 12V/24V rated voltages with DIN and AMP connector choices

Technical Specifications 

Valve Family Compatibility

• PVG32 / PVG100

Actuator Type

• PVEO: ON/OFF non-proportional control actuator

• PVEO-Ex: ATEX explosion-proof ON/OFF actuator

Supply Voltage

• 12 VDC or 24 VDC

• 24V models: 22-30 VDC range

• 12V models: 11-15 VDC range

Pilot Pressure

• 13.5 bar (standard PVE)

Coil Power

• 5 W

Protection Class

• IP65 (1×4 DIN connector models)

• IP66 (1×4 AMP connector models)

• IP67 (select models)

Operating Temperature Range

• -40°C to +90°C

Weight

• 972 g (1×4 DIN connector models)

• 786 g (1×4 AMP connector models)

Connector Type

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

• 1×4 AMP JPT SAAB

Connector Direction

• 90° (Up)

Response Time

• On-stroke A/B: 120 ms

• De-stroke A/B: 120 ms

Max Oil Consumption

• 0 L/min (steady state)

Certifications

• CE marked

• ISO13849 compliant

• ATEX explosion-proof certified (Ex models)

157B/11xxxxx Series Model List

• 11166743: PVEO32 actuator, S7 series, 1×4 DIN/Hirschmann connector, ON/OFF, 24V DC

  • Replaces: 157B4228

  • Protection: IP65

  • Weight: 972 g

• 11166829: PVEM32 actuator, S7 series, 1×4 DIN, passive fault monitoring

  • Replaces: 157B4116, 157B4128

  • Type: PVEM (not PVEO), medium-performance actuator

• 11166824: PVEH32 actuator, S7 series, 1×4 DIN, passive fault monitoring

  • Voltage: 11-32V DC

  • Type: PVEH (not PVEO), high-performance proportional actuator

• 157B4225: PVEO32 solenoid assembly / electrical control module

  • 24V DC

  • Superseded by 157B4228

• 157B4228: PVEO32 electro-hydraulic actuator, ON/OFF, 24V DC, Hirschmann/DIN connector

  • Compatible with: PVG32, PVG100

  • Replaces: 157B4224, 157B4225

  • Weight: approx. 1.0 kg

• 157B4278: PVEO 24V ATEX actuator

  • ATEX explosion-proof

  • Superseded by 11123166

• 157B4218: PVEO-Ex 24V ATEX actuator

  • ATEX explosion-proof, ON/OFF function

  • Compatible with: PVG32, PVG100

  • Series 4

  • Superseded by 11123166

Key Technical Advantages

1. 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.

2. Wide Voltage Adaptability
PVEO actuators are available in 12V and 24V rated voltage versions. 24V models support a wide 22-30V DC input voltage range, effectively accommodating voltage fluctuations in vehicle electrical systems and ensuring stable actuator operation during engine start-up and load transients.

3. Multiple Connector Options and Installation Flexibility
The PVEO series offers both 1×4 DIN 43650-A/ISO4400 (Hirschmann) and 1×4 AMP JPT SAAB connector options, adapting to different OEM wiring harness standards. The 90° upward connector orientation facilitates cable routing in compact valve stack spaces.

4. Rugged Protection and Extreme Environmental Tolerance
PVEO actuators feature protection ratings ranging from IP65 to IP67, effectively resisting dust ingress, high-pressure water jets, and humid environments. The operating temperature range spans -40°C to +90°C, ensuring reliable electrical performance and mechanical actuation under extreme cold or high-temperature conditions.

5. ATEX Explosion-Proof Certification (Ex Models)
Models 157B4218 and 157B4278 are ATEX explosion-proof certified, making them suitable for hazardous area applications where explosive gas or dust atmospheres may be present, such as mining machinery and petrochemical equipment, providing safety assurance for special operating conditions.

6. Standardized Interface and Quick Replacement Capability
PVEO actuators feature the unified Danfoss PVE series mechanical mounting dimensions and standardized electrical interfaces, enabling replacement within minutes. The 8-digit 157B model code is embossed on the back of the plastic actuator housing, facilitating rapid on-site identification and spare parts management.

Application Areas

• Mobile Cranes and Knuckle Boom Cranes: Outrigger extension/retraction, swing lock, and other ON/OFF control functions

• Aerial Work Platforms: Boom locking, safety interlocks, and other switching-type hydraulic functions

• Agricultural Machinery: Tractor PTO engagement/disengagement, hitch system locking

• Material Handling Equipment: Forklift attachment switching, hydraulic locking

• Construction Equipment: Switching control for excavator attachment hydraulic tools

• Mining and Explosion-Proof Equipment (Ex models): Electrical switching control for hydraulic valves in hazardous areas

• Industrial Hydraulic Systems: Electric control drive for simple ON/OFF hydraulic actuators

Expert Maintenance Tips

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

• 157B4225 has been superseded by 157B4228

• 157B4218 and 157B4278 (ATEX models) have been superseded by 11123166

• 11166743 is the new code for 157B4228
  It is recommended to select the latest code models for long-term supply availability and after-sales support.

2. Electrical Connection Inspection
Prior to installation, verify that the connector type (DIN or AMP) matches your system wiring harness. 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
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 modules. Verify that system pilot pressure meets actuator specifications before installation.

4. Supply Voltage Verification
Although the actuator supports wide voltage input (24V models: 22-30V DC), it is still recommended to 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. Special Precautions for Explosion-Proof Models (Ex Models)
Models 157B4218 and 157B4278 are ATEX explosion-proof certified. Installation and maintenance must strictly comply with hazardous area operation regulations:

• Never remove or replace the actuator while energized

• Ensure cable entry devices are properly sealed and meet explosion-proof requirements

• Use only certified explosion-proof connectors and cables

• Regularly inspect housing integrity—replace immediately if cracks or damage are found

6. Spare Parts Strategy
It is recommended to keep 1-2 commonly used actuator models as on-hand spares. Thanks to the modular 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 (e.g., 11166743 as the replacement for 157B4228).

1. PVEO Series

• PVEO
• PVEO32 Actuator
• 11166743
• 11166829
• 11166824
• PVEO24V
• PVEO-Ex24V

2. PVEH Series

• PVEH12V
• PVEH11-32V
• PVEH24V
• PVEH-Ex24V
• PVEH with float (replaces some PVEM models)

3. PVEM Series

• PVEM12V
• PVEM24V
• Some models are discontinued; standard PVEH (157B4032) can be used as a replacement

4. PVES Series

• PVES12V
• PVES11-32V
• PVES24V

5. PVEK Series

• PVEK12V
• PVEK24V
• PVEK-DI12V
• PVEK-DI24V

6. PVEA Series

• PVEA11-32V
• PVEA-DI11-32V

7. PVEB Series

• PVEB12V
• PVEB24V
• PVEB-DI12V
• PVEB-DI24V

8. PVED Series

• PVED-CC12V
• PVED-CC11-32V