157B5111 Danfoss PVG32 Proportional Valve Module

Product Overview:

Danfoss 157B series PVG32 proportional valve group modules (typical models 157B5111, 157B6230, 157B4228) are core components of load-sensing proportional multi-section valve systems. 157B5111 is a closed-center pump side module (PVP) with pilot oil supply for PVE; 157B6230 is a compensated basic work module (PVB) with rated flow 100 L/min; 157B4228 is a PVEO on-off electro-hydraulic actuator (24 V). System maximum continuous pressure 350 bar, peak 420 bar. Fully interchangeable with original Danfoss PVG32 series and rigorously tested under simulated duty cycles for precise flow and pressure control in mobile and industrial hydraulic systems.

Technical Specifications 

• Models: 157B5111 (closed-center PVP pump side module), 157B6230 (compensated PVB work module), 157B4228 (PVEO 24 V actuator)
• Valve Group Series: Danfoss PVG32
• Maximum Continuous Pressure: 350 bar
• Maximum Peak Pressure: 420 bar
• Rated Flow: PVB module typically 100 L/min (up to 130 L/min depending on spool)
• Actuation: Proportional / on-off electro-hydraulic (PVE/PVEO), load-sensing compensation
• Ports: 157B5111 P/T = G3/4; 157B6230 A/B = G1/2
• Weight: PVP approx. 3 kg; PVB approx. 3.3 kg; PVEO approx. 0.6–1.0 kg

Key Technical Advantages

1. Load-sensing precise control: Compensated PVB modules deliver flow independent of load pressure, improving system efficiency and multi-actuator coordination.
2. 100% drop-in interchangeability: Fully compatible with original Danfoss PVG32 interfaces and functions — direct replacement of pump side, work sections and actuators.
3. High-pressure reliable design: Continuous 350 bar and peak 420 bar rating with precision compensator and shock-valve cavities for demanding duty.
4. Proven modular reliability: Quality cast construction and electro-hydraulic actuation, validated by 100% simulated duty-cycle testing for long-term stable operation.

Application Areas

• Excavators, loaders and cranes multi-section proportional control
• Agricultural and forestry machinery hydraulic systems
• Concrete pump trucks and material-handling equipment
• Mobile and industrial hydraulic systems requiring load-sensing precise flow control

Expert Maintenance Tips

Ensure hydraulic fluid cleanliness meets ISO 4406 18/16/13 or better (for PVE actuation) before installation; inspect seals and O-rings. Match correct voltage (e.g. 24 V) and ensure connector sealing. Periodically check compensator and actuator response to prevent contamination-related sticking. Prefer matching original configuration (open/closed center, flow rating) when replacing modules. Protect mounting surfaces and tie rods during service; perform functional testing and leakage checks after installation.