157B4734 Danfoss PVEA32 Proportional Actuator 11177348

Product Overview

The Danfoss 157B4734 PVEA32 is an electro-hydraulic proportional actuator designed to control the main spool of a PVG proportional valve section.

Unlike a stand-alone directional valve, the PVEA is the electro-hydraulic actuation module mounted on a PVG work section. It receives an electrical command and uses pilot hydraulic pressure to position the PVG main spool, allowing proportional control of hydraulic flow or pressure. Danfoss identifies PVEA as a high-performance proportional actuation solution for PVG platforms including PVG32 and PVG100.

The original 157B4734 is now listed by Danfoss as an obsolete product, with 11177348 identified as the recommended replacement. The replacement is a PVEA Series 7 unit with a 1×4 AMP connector, 11–32 VDC supply, active fault monitoring and IP66 protection.

For OEM replacement and aftermarket applications, correct identification of the complete actuator configuration is essential because connector type, fault-monitoring strategy, oil consumption, coil power and mechanical dimensions can vary between PVEA versions.

Our replacement units are manufactured with a focus on OEM interchangeability and undergo 100% simulated operating-condition testing to verify electrical response, proportional spool actuation, fault-monitoring behavior and hydraulic performance.

Technical Specifications

157B4734

• Manufacturer: Danfoss
• Product Type: PVEA Electro-Hydraulic Proportional Actuator
• Part Number: 157B4734
• Compatibility: PVG32 / PVG100 applications
• Product Status: Obsolete
• Recommended Replacement: 11177348
• Supply Voltage: 11–32 VDC
• Control Signal: Ratiometric
• Connector: 1×4 AMP JPT SAAB
• Connector Direction: 90° Up
• Pilot Pressure: 13.5 bar
• Fault Monitoring: Active
• Fault Reaction: Solenoid Disable & Auto Recovery
• Hysteresis: 2.0%
• Resolution: 50
• On-Stroke Response: 350 ms
• De-Stroke Reaction: 225 ms
• Maximum Oil Consumption: 0 L/min
• Steady-State Oil Consumption: 0.4 L/min
• Nominal A Stroke: 7
• Nominal B Stroke: 7
• Protection: IP66
• Coil Power: 8 W
• Valve-Side Interface: PVE32 O-Ring
• Length: 106 mm
• Maximum System Pressure Peak: 60 bar
• Certification: ISO 13849 compliant
• Marking: CE / EAC

11177348

• Manufacturer: Danfoss
• Product Type: PVEA Series 7 Electro-Hydraulic Proportional Actuator
• Part Number: 11177348
• Platform: PVG32 / PVG100
• Supply Voltage: 11–32 VDC
• Control Signal: Ratiometric
• Connector: 1×4 AMP JPT SAAB
• Connector Direction: 90° Up
• Pilot Pressure: 13.5 bar
• Fault Monitoring: Active
• Fault Reaction: Solenoid Disable & Power Reset
• Disable Function: Power Save
• Hysteresis: 2.0%
• Resolution: 50
• On-Stroke Response: 350 ms
• De-Stroke Reaction: 225 ms
• Maximum Oil Consumption: 1.0 L/min
• Steady-State Oil Consumption: 0.4 L/min
• Nominal A Stroke: 7
• Nominal B Stroke: 7
• Protection: IP66
• Coil Power: 4 W
• Valve-Side Interface: PVE32 O-Ring
• Length: 89 mm
• Maximum System Pressure Peak: 60 bar
• Certification: ISO 13849 compliant
• Marking: CE / EAC
• Product Status: Standard Part

Key Technical Advantages

High-Performance Proportional Spool Control

Danfoss classifies PVEA as a proportional actuator for high-performance applications. The actuator uses electro-hydraulic pilot control together with closed-loop spool control to position the PVG main spool accurately.

Designed for PVG32 and PVG100

The PVE Series 7 platform is specifically designed for PVG proportional valve systems. The actuator controls a single PVG work section, making it an integral part of the complete hydraulic control architecture rather than a stand-alone directional valve.

Wide 11–32 VDC Operating Range

The identified 157B4734 and 11177348 configurations operate across 11–32 VDC, making them suitable for both 12 V and 24 V mobile hydraulic electrical systems.

Active Fault Monitoring

The 11177348 Series 7 actuator provides active fault monitoring and a defined fault reaction strategy. This improves diagnostic capability in electronically controlled mobile hydraulic systems.

AMP Electrical Interface

The 1×4 AMP JPT SAAB connector provides a standardized electrical interface for compatible PVG installations. The 11177348 configuration is rated at IP66, providing protection appropriate for demanding mobile equipment environments.

Closed-Loop Spool Control

Danfoss states that all proportional PVE actuators feature closed-loop spool control and continuous fault monitoring. This architecture helps maintain repeatable spool positioning under changing machine operating conditions.

Clear OEM Replacement Path

Danfoss explicitly lists 11177348 as the recommended replacement for 157B4734, making the model transition straightforward for maintenance and aftermarket procurement.

Application Areas

Typical applications include:

• Construction Machinery
• Agricultural Machinery
• Forestry Equipment
• Material Handling Equipment
• Road Construction Machinery
• Excavators
• Loaders
• Telehandlers
• Tractors
• Harvesting Equipment
• Cranes
• Specialized Mobile Hydraulic Equipment
• PVG32 Hydraulic Control Systems
• PVG100 Hydraulic Control Systems

The PVE Series 7 platform is documented for PVG32, PVG100 and additional PVG valve platforms.

Expert Maintenance Tips

Verify the Replacement Number

For an original 157B4734, verify 11177348 as the intended replacement rather than selecting a generic PVEA actuator. Danfoss officially identifies 11177348 as the recommended replacement.

Check Mechanical Clearance

The published length differs between the two configurations:

• 157B4734: 106 mm
• 11177348: 89 mm

Check the mounting environment, cable routing and connector clearance before installation.

Verify Pilot Pressure

The specified standard PVE pilot pressure is 13.5 bar. Insufficient pilot pressure, restricted pilot passages or contaminated orifices can prevent correct main-spool positioning.

Check the PVG Main Spool

An actuator fault should not automatically be interpreted as a PVEA failure. Before replacement, inspect:

• PVG main-spool movement
• Pilot pressure
• PVE-to-valve O-ring condition
• AMP connector condition
• Supply voltage
• Controller command signal
• Hydraulic contamination

Perform Dynamic Testing

The specified PVEA response times are approximately:

• Neutral to maximum spool stroke: 350 ms
• Maximum spool stroke to neutral: 225 ms

A replacement should therefore be tested dynamically under hydraulic load rather than evaluated only through electrical continuity or coil resistance.

Account for Oil Consumption Differences

The official data shows a difference in maximum oil consumption between 157B4734 and 11177348:

• 157B4734: 0 L/min maximum
• 11177348: 1.0 L/min maximum
• Both: 0.4 L/min steady-state

For systems with tightly controlled pilot-oil capacity, verify the replacement configuration against the complete hydraulic circuit before commissioning.