PVEH/PVEK/PVEO Actuator 157B4911 157B4256 157B4292 157B4093 11166732 157B4036 157B4032

Product Overview

The PVEH, PVEK, and PVEO series electro-hydraulic actuators are three core product lines within the Danfoss PVE actuator family, each designed for distinct performance requirements and application scenarios. The PVEH is a high-performance proportional control actuator featuring a closed-loop control architecture with an embedded LVDT position sensor, offering 250-step high resolution for applications demanding stringent control accuracy and dynamic response. The PVEK is a low-hysteresis proportional actuator developed with hybrid technology, belonging to PVE Series 3, featuring a 2-solenoid + 2-orifice design that replaces the traditional 4-solenoid bridge—optimized for applications where low hysteresis takes priority over response time. The PVEO is an ON/OFF non-proportional control actuator with open-loop spool control, primarily used for simple switching-type work functions where proportional speed or oil flow control is not required.

Effective July 1, 2020, Danfoss has transitioned all new orders exclusively to Series 7 actuators. Series 7 features improved electronics, greater resistance to interference, and longer service life.

This product offers a complete range of PVEH/PVEK/PVEO series electro-hydraulic actuators—covering models 157B4911 (PVEK 12V) , 157B4256 (PVG32 PVPX 12V LS Unloader) , 157B4292 (PVEO 24V Deutsch) , 157B4093 (PVEH 11-32V PASS) , 11166732 (PVEH32 S7 11-32V PASS Deutsch) , 157B4036 (PVEH-DI 11-32V AMP ACT) , and 157B4032 (PVEH 11-32V) —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; Series 4 and Series 7 share identical mounting dimensions

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

• Multi-Series Coverage: PVEH high-performance proportional, PVEK low-hysteresis proportional, PVEO ON/OFF — addressing diverse application needs

• 11-32V Wide Voltage Range: Compatible with both 12V and 24V mainstream vehicle power systems

Technical Specifications 

Valve Family Compatibility

• PVG32 / PVG100

Series Description

• PVEH: High-performance proportional control actuator (closed-loop), 250-step resolution

• PVEK: Low-hysteresis proportional control actuator (PVE Series 3), hybrid technology

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

Supply Voltage

• 157B4911 (PVEK) : 12 VDC

• 157B4256 (PVG32 PVPX) : 12 VDC

• 157B4292 (PVEO) : 24 VDC

• 157B4093 (PVEH) : 11-32 VDC

• 11166732 (PVEH32 S7) : 11-32 VDC

• 157B4036 (PVEH-DI) : 11-32 VDC

• 157B4032 (PVEH) : 11-32 VDC

Pilot Pressure

• Nominal: 13.5 bar

Control Signal

• Analog voltage proportional signal (Ratiometric)

• Neutral: Uₛ = 0.5 × U_DC (50% DUT)

• P→A direction: Uₛ = 0.5 to 0.25 × U_DC (50% to 25% DUT)

• P→B direction: Uₛ = 0.5 to 0.75 × U_DC (50% to 75% DUT)

Resolution (PVEH)

• 250 steps

Hysteresis (PVEH)

• 4.0%

Response Time (PVEH 11166732)

• On-stroke/De-stroke A/B: 120 ms

Max Oil Consumption (PVEH 11166732)

• Steady state: 0 L/min

Coil Power (PVEH 11166732)

• 8 W

Protection Class

• 157B4911 (PVEK): IP66

• 11166732 (PVEH S7): IP67

• 157B4036 (PVEH-DI): IP66

Operating Temperature Range

• -40°C to +85°C (estimated, based on PVE series general specifications)

Connector Type

• 157B4911: AMP

• 157B4292: 1×4 Deutsch

• 11166732: 1×4 Deutsch – DT04

• 157B4036: 2×4 AMP

• 157B4093 / 157B4032: 1×4 DIN / Deutsch optional

Connector Direction

• 90° (Up)

Weight

• 157B4911: approx. 0.8–1.0 kg

• 157B4256: 0.345 kg

• 157B4036: 1 kg

• 11166732: approx. 1.0 kg

Certifications

• CE, EAC

• ISO13849 compliant

157B/111 Series Model List

• 157B4911: PVEK electro-hydraulic actuator, 12V, AMP connector, without direction indication

  • Type: PVEK (low-hysteresis proportional control, PVE Series 3)

  • Series 3, hybrid technology, 2-solenoid + 2-orifice design

  • Compatible with: PVG32

  • Superseded by 11177348

• 157B4256: PVG32 PVPX electric LS unloader valve, 12V

  • Type: PVPX (load-sensing pressure unloader valve)

  • Compatible with: PVG32 proportional valve group

  • Weight: 0.345 kg

• 157B4292: PVEO electro-hydraulic actuator, 24V, 1×4 Deutsch connector

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

  • Series: Series 4

  • Compatible with: PVG32, PVG100

  • Superseded by 11166838

• 157B4093: PVEH32 electro-hydraulic actuator, 11-32V, passive fault monitoring

  • Type: PVEH (high-performance proportional control)

  • Series: Series 4

  • Compatible with: PVG32, PVG100

  • Superseded by 11166732

• 11166732: PVEH32 electro-hydraulic actuator, 11-32V, 1×4 Deutsch connector, passive fault monitoring

  • Type: PVEH (high-performance proportional control)

  • Series: Series 7

  • Compatible with: PVG32

  • Hysteresis: 4.0%

  • Resolution: 250 steps

  • Response time: 120 ms

  • Protection: IP67

  • Replaces: 157B4093

• 157B4036: PVEH-DI electro-hydraulic actuator, 11-32V, 2×4 AMP connector, active fault monitoring, with direction indication

  • Type: PVEH-DI (with direction indication)

  • Series: Series 4

  • Compatible with: PVG32

  • Protection: IP66

  • Weight: 1 kg

  • Superseded by 11166819

• 157B4032: PVEH electro-hydraulic actuator, 11-32V

  • Type: PVEH (high-performance proportional control)

  • Compatible with: PVG series proportional valves

Key Technical Advantages

1. PVEH High-Performance Closed-Loop Proportional Control — 250-Step High Resolution
The PVEH actuator employs a closed-loop control architecture with an embedded LVDT position sensor providing real-time spool position feedback. An embedded micro-controller processes the signal voltage and feedback signal, precisely regulating solenoid valves to drive the main spool. PVEH offers 250-step high resolution and 4.0% low hysteresis, with a response time of just 120 ms—ideal for applications demanding stringent control accuracy and dynamic response. The 11166732, as a Series 7 upgrade, features improved electronics, greater interference resistance, and longer service life.

2. PVEK Low-Hysteresis Hybrid Technology — Innovative 2-Solenoid + 2-Orifice Design
PVEK belongs to PVE Series 3, featuring newly developed hybrid-technology electronics. Unlike the traditional 4-solenoid bridge of PVE Series 2, PVEK employs an innovative 2 normally-closed solenoids + 2 orifices (0.6 mm) design. This design delivers extremely low hysteresis, performing exceptionally well in applications where low hysteresis takes priority over response time. The pilot oil supply can simultaneously support at least 5 PVEK units. 157B4911 is the PVEK 12V version, equipped with a standard AMP connector (IP66).

3. 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. 157B4292 is the PVEO 24V version with a 1×4 Deutsch connector, compatible with PVG32 and PVG100 valve groups.

4. Flexible Fault Monitoring Options — Active and Passive Available
The PVEH series offers both active and passive fault monitoring options:

• Active (157B4036) : Continuously monitors actuator electrical status, automatically transmitting fault signals upon detecting anomalies

• Passive (157B4093, 11166732) : Displays error states via LED indicators, with diagnostic information read by the controller
  Both options effectively enhance system safety and maintainability.

5. Direction Indication Function
157B4036 (PVEH-DI) features a built-in spool movement direction indication function. Through DI output signals, the spool movement direction can be monitored in real time—when the spool moves toward port A, signal A transitions from “high” to “low” while signal B remains “high”; the reverse occurs for movement toward port B. This feature greatly facilitates system commissioning and fault diagnosis.

6. 11-32V Wide Voltage and Multiple Connector Options
The PVEH/PVEK/PVEO series supports an 11-32V DC wide input voltage range (with some models at fixed 12V or 24V), allowing a single actuator to accommodate both 12V and 24V mainstream vehicle power systems. Connector options include AMP, 1×4 Deutsch, and 2×4 AMP, adapting to different OEM wiring harness standards.

7. Rugged IP66/IP67 Protection and Extreme Environmental Tolerance
PVEK actuators feature IP66 protection, PVEH-DI is IP66, and 11166732 (Series 7) achieves IP67. The operating temperature range spans -40°C to +85°C, ensuring reliable electrical performance and mechanical actuation under extreme cold, high-temperature, and challenging conditions.

8. Seamless Series 4 to Series 7 Upgrade Path
Effective July 1, 2020, Danfoss has fully transitioned to Series 7. Series 7 actuators (e.g., 11166732) are fully dimensionally compatible with Series 4 actuators (e.g., 157B4093) — no hydraulic system modifications required. Series 7 features improved electronics, greater interference resistance, and longer service life.

Application Areas

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

• Aerial Work Platforms: PVEH for smooth proportional regulation and precise positioning of boom movements

• Agricultural Machinery: PVEH for high-performance electro-hydraulic proportional drive of tractor hydraulic hitch systems

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

• Construction Equipment: PVEH for fine proportional control of attachment hydraulic tools

• Industrial Hydraulic Systems: Electronic control drive for high-precision proportional valves on stationary equipment

• Load-Sensing Systems: 157B4256 (PVPX LS Unloader) for load-sensing pressure unloading control in PVG32 valve groups

Expert Maintenance Tips

1. Model Confirmation and Replacement Relationships
The Danfoss PVE series has undergone multiple generational changes (Series 3 → Series 4 → Series 7). Before installation, confirm the replacement relationship for your specific model:

• 157B4911 (PVEK 12V) has been superseded by 11177348

• 157B4292 (PVEO 24V Deutsch) has been superseded by 11166838

• 157B4093 (PVEH 11-32V PASS) has been superseded by 11166732

• 157B4036 (PVEH-DI 11-32V AMP ACT) has been superseded by 11166819
  It is recommended to select the latest Series 7 code models for long-term supply availability and after-sales support.

2. Connector Type Confirmation
Different models use different connector standards. Prior to installation, verify compatibility with your system wiring harness:

• 157B4911: AMP

• 157B4292 / 11166732: 1×4 Deutsch

• 157B4036: 2×4 AMP
  Ensure the locking mechanism is fully engaged during connection to prevent loosening due to vibration.

3. Pilot Pressure Verification
PVEH/PVEK/PVEO actuators require a stable pilot oil supply pressure for proper operation. Standard PVE actuators require a nominal pilot pressure of 13.5 bar. IMPORTANT: Standard PVE electrical modules CANNOT operate at 25 bar pilot pressure! Verify that system pilot pressure meets actuator specifications before installation.

4. Supply Voltage Verification

• 157B4911 (12V version): Verify voltage is within 11-15V range

• 157B4292 (24V version): Verify voltage is within 22-30V range

• 157B4093 / 11166732 / 157B4036 / 157B4032 (11-32V wide voltage): Verify voltage is within 11-32V range with ripple not exceeding 5%

5. PWM Signal Requirements (PVEH/PVEK)
PVEH and PVEK are proportional control actuators requiring PWM (Pulse Width Modulation) control signals. PVEH (11166732) recommended PWM frequency > 1000 Hz. Signal voltage mapping is as follows:

• Neutral: Uₛ = 0.5 × U_DC (50% DUT)

• P→A direction: Uₛ = 0.5 to 0.25 × U_DC (50% to 25% DUT)

• P→B direction: Uₛ = 0.5 to 0.75 × U_DC (50% to 75% DUT)

6. Fault Monitoring Function Verification (Active Models)
157B4036 is an active fault monitoring model. After installation, verify that the fault monitoring function operates correctly: simulate fault conditions such as coil open circuit or signal anomalies to confirm the actuator can properly transmit fault signals to the controller.

7. PVEK Contamination Sensitivity Notice
PVEK employs a 2-solenoid + 2-orifice design and is more sensitive to contamination than PVE Series 2. When installing PVEK actuators (157B4911), ensure system fluid cleanliness meets ISO 4406 18/16/13 or higher, with full-flow return line filters rated at 10 μm or finer.

8. Contamination Prevention During Replacement
When replacing an actuator, observe the following precautions:

• Thoroughly clean the area around the actuator before removal

• Immediately seal ports with clean plugs after removal to prevent contaminant entry into the hydraulic system

• Verify O-ring seals are intact before installing the new actuator

• Prevent foreign objects from falling onto the mounting surface during installation

• Tighten mounting screws diagonally to specified torque

9. Spare Parts Strategy
It is recommended to keep 1-2 commonly used actuator models as on-hand spares. It is advisable to stock the latest Series 7 code models (11166732 replacing 157B4093; 11166819 replacing 157B4036; 11166838 replacing 157B4292; 11177348 replacing 157B4911) for long-term supply availability and after-sales support.