Sauer Danfoss PVG-120 Proportional Valve

Sauer Danfoss PVG-120 Proportional Valve

The Sauer Danfoss PVG-120 Proportional Valve is a heavy duty load detecting directional control valve for high flow high pressure industrial and marine applications. The valve group, which is constructed in sections, is designed for smooth flow control independent of the load, to withstand extreme mechanical loads and to achieve absolute metering precision. Whether using an open-center circuit for fixed displacement pumps or a closed-center matrix for variable displacement systems, the PVG-120 is designed for hydraulic energy efficiency, reduced internal leakage and to work seamlessly with electrohydraulic PVE actuators or mechanical linkages.

Model Details

• Product Series: PVG 120 Proportional Valve Group
• Manufacturer: Danfoss Power Solutions (Sauer-Danfoss)
• Configuration Type: Sectional Load-Sensing Proportional Valve
• Actuation Matrix: Compatible with PVEO (On/Off), PVEH (High Proportional Performance), PVH (Hydraulic Remote), and PVM (Mechanical Manual Override).

Technical Specifications: PVG-120 Proportional Valve

Key Features

1. Load-Independent Flow Control: Provides linear, predictable metering regardless of load fluctuations, preventing unintended actuator dropping or speed variations.
2. High Flow & Pressure Matrix: Rated for system pressures up to 400 bar (5,800 psi) and work port flow distribution up to 240 L/min (63.4 US gal/min) with high-capacity options.
3. Modular Integration: Sectional construction allows up to 8 work sections to be stacked in a single valve block, with direct intermediate capability to combine with PVG 32 modules.
4. Advanced Electronic Safeguards: Available PVEH actuators feature active or passive fault monitoring systems that automatically shut down or alert the PLC during pilot voltage deviations or spool positioning failures.

Applications

• Marine Deck Machinery: High-capacity tension winches, mooring winches, cargo cranes, anchor windlasses, and bow thruster control systems.
• Heavy Drilling & Mining Rigs: Top drives, feed systems, pipe handling cranes, and blast-hole drilling rigs.
• Forestry Attachments: Large-scale log loaders, forwarders, wood harvesters, and high-torque saw drives.
• Subsea & Offshore Engineering: Deep-sea ROV launch and recovery systems (LARS), offshore crane controls, and hydraulic power units (HPUs).

Equipment Compatibility Matrix

• The PVG-120 proportional valve block interfaces directly with standard mobile and industrial prime movers, control infrastructure, and auxiliary hydraulic components:
• Hydraulic Pump Integration: Fully compatible with Danfoss Series 45, Series 90, and H1 variable displacement axial piston pumps, as well as legacy fixed gear and vane pumps via open-center PVP bypass configuration.
• Control Systems Architecture: Directly couples with Danfoss PLUS+1® microcontrollers, external marine PLCs (Siemens S7-1500, Allen-Bradley ControlLogix via analog output loops), and remote joystick controls such as PVRE, PVREL, and Prof 1 units.
• Valve Cross-Stacking: Can be integrated with PVG 32 directional control valves using intermediate adaptation plates, enabling low-flow and high-flow functions to be managed from a unified, compact valve manifold block.

Industrial Certifications & Compliance

• Safety Life-Cycle Standard: Designed to align with IEC/EN 61508 protocols for safety-related electronic control systems.
• Machine Directive Performance: Meets ISO 13849 requirements (Performance Level d/e) when utilized alongside active PVE fault-monitoring configurations.
• Ingress Protection Rating: Actuators (PVE Series 4) carry IP66 / IP67 certifications when properly terminated with DEUTSCH DT or AMP ITT Cannon connectors.
• Marine Class Approvals: Manifolds and castings can be supplied with material test certifications complying with DNV-GL, Lloyd’s Register (LR), American Bureau of Shipping (ABS), and Bureau Veritas (BV) for marine deck installation rules.