157B9622 Danfoss PVG32 PVE Main Spool 40 L/min

Product Overview

157B9622, 157B9623, 157B9624, 157B9750, 157B9751, 157B9752 and 157B9753 are Danfoss PVG32 PVBS main spool part numbers. They are not complete PVG proportional valve groups.

Danfoss PVG32 documentation identifies the PVBS Main Spool as Field 13 in the valve-group configuration. A complete PVG32 assembly combines the pump-side module, PVB work sections, PVBS main spools, actuators and additional functional modules. (assets.danfoss.com)

The referenced part numbers belong to different PVBS configurations:

• 157B9622 / 157B9623 / 157B9624: PVE-actuated special-function PVBS configurations with float-related features.
• 157B9750 / 157B9751 / 157B9752 / 157B9753: PVE-actuated, 4-way/3-position PVBS spools with closed neutral position and linear flow-control characteristics. (assets.danfoss.com)

For aftermarket replacement, correct identification requires more than the PVG32 family name. Engineers should verify the part number, spool interface, flow rating, neutral function, spool characteristic, actuator configuration and auxiliary functions.

Technical Specifications (Bulleted List)

157B9622

• Manufacturer: Danfoss
• Series: PVG32
• Component: PVBS Main Spool
• Actuation: PVE
• Spool Interface: PVB32 LS Shuttle
• Flow Rating: 40 L/min
• A → T: 40 L/min
• P → A: 40 L/min
• P → B: 40 L/min
• B → T: 40 L/min
• Neutral: Blocked / Closed
• Spool Characteristic: Progressive
• Control: Flow on A→T/B→T; Turbo on P→A/P→B
• Pilot Pressure at Neutral: 4.0 bar
• Pilot Pressure at Full Stroke: 5.5 bar
• Nominal Diameter: Standard
• Float Direction: B Port
• Minimum Float Position: 6
• Nominal Maximum Position A: 4.6
• Nominal Maximum Position B: 8.8
• Spool Deadband: 1.5 mm
• Spool Option: Tensionbar / Float Detent Pin
• Certification: ISO 13849 compliant (Danfoss PowerSource)

157B9623

• Manufacturer: Danfoss
• Series: PVG32
• Component: PVBS Main Spool
• Actuation: PVE
• Flow Rating: 65 L/min
• A → T: 65 L/min
• P → A: 65 L/min
• P → B: 65 L/min
• B → T: 65 L/min
• Configuration: PVE-actuated PVBS spool
• Float-related configuration: Applicable within the documented PVE/PVBS configuration family. (assets.danfoss.com)

157B9624

• Manufacturer: Danfoss
• Series: PVG32
• Component: PVBS Main Spool
• Actuation: PVE
• Spool Interface: 0I, PVB32 LS Shuttle
• A → T: 100 L/min
• P → A: 100 L/min
• P → B: 100 L/min
• B → T: 100 L/min
• A → T Neutral Function: Blocked (Closed)
• B → T Neutral Function: Blocked (Closed)
• Spool Characteristic A/B: Progressive
• P → A / P → B Control: Turbo
• Pilot Pressure Neutral: 4.0 bar
• Pilot Pressure Full Stroke: 5.5 bar
• Nominal Diameter: Standard
• Float Direction: B Port
• Minimum Float Position: 6
• Nominal Maximum Position A: 4.6
• Nominal Maximum Position B: 8.8
• Spool Deadband: 1.5 mm
• Spool Option A: Tensionbar
• Spool Option B: Float Detent Pin
• Certification: ISO 13849 compliant (Danfoss PowerSource)

157B9750

• Manufacturer: Danfoss
• Series: PVG32
• Component: PVBS Main Spool
• Actuation: PVE
• Spool Interface: 0B, PVB32
• A → T Flow: 10 L/min
• P → A Flow: 10 L/min
• P → B Flow: 10 L/min
• B → T Flow: 10 L/min
• Neutral Function: Blocked / Closed
• Spool Characteristic: Linear
• Spool Deadband: 1.5 mm
• Pilot Pressure Neutral: 4.0 bar
• Pilot Pressure Full Stroke: 5.5 bar
• Nominal Diameter: Standard
• Spool Option A: Tensionbar
• Spool Option B: Plug
• Certification: ISO 13849 compliant (Danfoss PowerSource)

157B9751

• Series: PVG32
• Component: PVBS Main Spool
• Actuation: PVE
• Spool Interface: PVB32
• A → T: 25 L/min
• P → A: 25 L/min
• P → B: 25 L/min
• B → T: 25 L/min
• Neutral Function: Blocked / Closed
• Spool Characteristic: Linear
• Spool Deadband: 0.8 mm
• Pilot Pressure Neutral: 4.0 bar
• Pilot Pressure Full Stroke: 5.5 bar
• Nominal Diameter: Standard
• Spool Option A: Tensionbar
• Spool Option B: Plug
• Certification: ISO 13849 compliant (Danfoss PowerSource)

157B9752

• Series: PVG32
• Component: PVBS Main Spool
• Actuation: PVE
• Spool Interface: PVB32
• A → T: 40 L/min
• P → A: 40 L/min
• P → B: 40 L/min
• B → T: 40 L/min
• Neutral Function: Blocked / Closed
• Spool Characteristic: Linear
• Spool Deadband: 0.8 mm
• Pilot Pressure Neutral: 4.0 bar
• Pilot Pressure Full Stroke: 5.5 bar
• Nominal Diameter: Standard
• Spool Option A: Tensionbar
• Spool Option B: Plug
• Certification: ISO 13849 compliant (Danfoss PowerSource)

157B9753

• Series: PVG32
• Component: PVBS Main Spool
• Actuation: PVE
• Spool Interface: PVB32
• A → T: 65 L/min
• P → A: 65 L/min
• P → B: 65 L/min
• B → T: 65 L/min
• Neutral Function: Blocked / Closed
• Spool Characteristic: Linear
• Spool Deadband: 0.8 mm
• Pilot Pressure Neutral: 4.0 bar
• Pilot Pressure Full Stroke: 5.5 bar
• Nominal Diameter: Standard
• Spool Option A: Tensionbar
• Spool Option B: Plug
• Certification: ISO 13849 compliant (Danfoss PowerSource)

System-Level PVG32 Data

• Maximum pump pressure: 350 bar
• Maximum pump flow: 160 L/min
• Main spool function: Flow metering and directional control
• Available actuation architecture: PVE electrical, PVM mechanical or PVH hydraulic depending on the configured valve system. (assets.danfoss.com)

Not applicable to the individual spool:

• Displacement
• Rotational speed
• Independent pump-rated pressure
• Independently verified peak-pressure rating

Key Technical Advantages

PVE-Compatible Electronic Proportional Control

The referenced PVBS configurations are designed for PVE-based electronic actuation. This enables spool position control through electrohydraulic command signals and provides the foundation for precise actuator-flow modulation. (assets.danfoss.com)

Multiple Flow Classes

The standard 157B9750–157B9753 family provides 10, 25, 40 and 65 L/min versions, giving engineers a defined flow-sizing range for PVG32 work sections. (assets.danfoss.com)

Linear Flow Characteristics

157B9750–157B9753 are documented with linear spool characteristics. This provides a more predictable relationship between commanded spool movement and metered flow within the pressure-compensated valve architecture. (Danfoss PowerSource)

Closed Neutral Configuration

The standard 157B9750–157B9753 spools have blocked A→T and B→T neutral functions. This creates a defined closed-neutral behavior for the corresponding PVG32 work-section configuration. (Danfoss PowerSource)

Float-Function Integration

The 157B9622/9623/9624 configuration family incorporates parameters such as float direction, minimum float position and float detent pin, indicating a specialized spool configuration for float-enabled applications. (Danfoss PowerSource)

Modular Serviceability

Danfoss PVG32 architecture separates the PVB work section, PVBS main spool, actuator and auxiliary functions into modular components. This supports targeted service and component replacement rather than requiring replacement of an entire valve group. (assets.danfoss.com)

In-Place Replacement Engineering

Our replacement approach focuses on the complete technical configuration rather than number matching alone:

Original Part Number → Interface → Flow Rating → Neutral Function → Spool Characteristic → Actuation → Auxiliary Function

Each replacement can be engineered for in-place interchangeability and subjected to 100% simulated working-condition testing before shipment.

Application Areas

Typical PVG32 PVBS applications include:

• Excavators
• Wheel loaders
• Agricultural machinery
• Forestry equipment
• Cranes
• Material-handling machinery
• Road-building machinery
• Mobile hydraulic platforms
• Hydraulic cylinder applications
• Hydraulic motor applications
• Off-highway mobile equipment

Danfoss positions PVG as a modular proportional valve platform for mobile hydraulic machines, with configurable valve sections and actuation solutions for multiple work functi

Expert Maintenance Tips

Verify the Complete Spool Configuration

Do not select a replacement using flow rating alone. Confirm:

Part Number + Interface + Flow + Neutral Function + Characteristic + Actuation + Auxiliary Function

Check Float Configuration on 157B9622/9623/9624

For float-enabled configurations, verify float direction, minimum float position and detent-related configuration before installation. (Danfoss PowerSource)

Inspect Spool-to-Bore Condition

Check for spool scoring, bore wear, contamination and abnormal clearance. Excessive wear can increase internal leakage and shift the intended metering characteristic.

Maintain Hydraulic Cleanliness

Prevent machining debris, seal fragments and external contamination from entering the spool/bore interface. Danfoss provides ISO 4406 cleanliness guidance for PVG systems depending on actuation configuration. (assets.danfoss.com)

Confirm PVE Compatibility

A PVBS spool must be compatible with the installed PVE actuator and the specific PVB/PVG32 configuration. Physical fit alone does not guarantee correct control behavior.

Perform Functional Testing

After installation, verify:

• Neutral behavior
• A/B port flow
• Full-stroke response
• Directional control
• Float function where applicable
• Internal leakage
• Pilot pressure
• Control response

For replacement components, 100% simulated working-condition testing is recommended before shipment to reduce on-machine commissioning time.