PVCMMAUBN1 Parker PVplus Control Component

Product Overview

The Parker PVCM family is not a single standalone hydraulic valve series. It is a family of control components used with Parker PV and PVplus axial piston pumps.

Parker’s official PVplus documentation identifies several PVCM control stages:

• PVCM*PV** — displacement control stage
• PVCM*U2** — pressure compensator stage
• PVCM*US** — pressure compensator with quick unloading
• PVCM*UP** — pressure compensator with preload and quick unloading

The same control architecture can be integrated with proportional pressure pilot valves, displacement feedback and pressure feedback for electronic p/Q control.

The specific components provided in the original title are not all complete control valves:

• PVCMAUBN1 — elbow manifold
• PVCMCKV1 — KS45 FPM connection plug set
• PVCMCKV3 — KS45 FPM connection plug set
• PVCMCKV8 — KS45 FPM connection plug set
• PVCMPCNS — NBR pressure pilot cartridge for KS45

These distinctions are important when sourcing replacement parts because each component has a different mechanical and hydraulic function.

For replacement applications, the correct engineering approach is to verify the complete PV/PVplus pump model, control code, pump frame, serial number and original component part number.

Technical Specifications

PVCMAUBN1

• Model: PVCMAUBN1
• Brand: Parker
• Application: PV/PVplus axial piston pump control system
• Component Type: Elbow manifold
• Manufacturer Division: Parker Hydraulic Pumps Division
• Reference Weight: approx. 3.00 lb / 1.36 kg
• Pressure Rating: Not independently verified for the individual component
• Flow Rating: Not independently verified for the individual component
• Displacement: Not applicable
• Rated Speed: Not applicable
• Function: Manifold component within a Parker pump-control assembly.

PVCMCKV1

• Model: PVCMCKV1
• Brand: Parker
• Component Type: KS45 connection plug set
• Seal Configuration: FPM
• Parker Material Number: 45812142
• Function: Connection/plug component used within the KS45 PVCM control system
• Pressure Rating: Not independently verified
• Flow Rating: Not applicable as a standalone valve
• Displacement: Not applicable
• Rated Speed: Not applicable.

PVCMCKV3

• Model: PVCMCKV3
• Brand: Parker
• Component Type: KS45 connection plug set
• Seal Configuration: FPM
• Parker Material Number: 45812143
• Function: Connection/plug component for KS45 PVCM control configuration
• Pressure Rating: Not independently verified
• Flow Rating: Not applicable as a standalone valve
• Reference Weight: approx. 0.05 kg according to distributor data.

PVCMCKV8

• Model: PVCMCKV8
• Brand: Parker
• Component Type: KS45 connection plug set
• Seal Configuration: FPM
• Parker Material Number: 45812144
• Function: Connection/plug component for KS45 PVCM control configuration
• Pressure Rating: Not independently verified
• Flow Rating: Not applicable as a standalone valve
• Reference Weight: approx. 0.05 kg according to distributor data.

PVCMPCNS

• Model: PVCMPCNS
• Brand: Parker
• Component Type: Pressure pilot cartridge
• Control Family: KS45
• Seal: NBR
• Application: Parker PV pump pressure-control circuit
• Function: Pressure pilot control
• Pressure Rating: Exact standalone rating not independently verified
• Flow Rating: Not published as an individual component rating
• Displacement: Not applicable
• Rated Speed: Not applicable
• Reference Weight: approx. 0.14 kg according to current distributor data.

Parker PVCM Control-System Reference

Parker’s official documentation shows PVCM components operating as part of a complete PVplus control architecture:

• Displacement control: PVCM*PV**
• Pressure compensation: PVCM*U2**
• Quick unloading: PVCM*US**
• Preload + quick unloading: PVCM*UP**
• Proportional pressure pilot: PVACRE***K**
• Displacement feedback: LVDT/CIP
• Pressure feedback: Pressure transducer
• Electronic controller: PQDXXA series
• PVplus pump displacement coverage: 16–360 cm³/rev at the pump-system level.

The 16–360 cm³/rev value applies to the PVplus pump platform, not to individual PVCM components.

Key Technical Advantages

Integrated PVplus Pump Control Architecture

Parker officially integrates PVCM control stages into the PVplus axial piston pump control architecture for displacement and pressure control.

Modular Pressure and Displacement Control

The PVCM architecture supports multiple control configurations including displacement control, pressure compensation, quick unloading and preload functions. This modular approach allows engineers to configure the control system for the specific PVplus pump application.

Electronic p/Q Control Compatibility

Parker’s current PQDXXA documentation demonstrates integration of PVCM control stages with proportional pressure control, displacement feedback, pressure feedback and horsepower/torque control.

Clearly Identified KS45 Spare Components

PVCMCKV1, PVCMCKV3 and PVCMCKV8 are each documented as KS45 FPM connection plug sets with dedicated Parker material numbers 45812142, 45812143 and 45812144. This provides a clear identification route for maintenance and spare-parts sourcing.

Pressure Pilot Cartridge for Control Stability

PVCMPCNS is identified as an NBR pressure pilot cartridge for KS45 PV control. Its condition can directly affect pressure-control stability and compensator behavior within the hydraulic control circuit.

Suitable for OEM Replacement and Service

The combination of complete model coding and dedicated component part numbers supports a structured replacement workflow:

PV/PVplus Pump → Control Code → PVCM Assembly → Individual Spare Part

This is more reliable than identifying replacement parts solely by physical appearance.

Application Areas

Typical applications include:

• Parker PV and PVplus axial piston pump systems
• Industrial hydraulic power units
• Injection molding machines
• Machine tools
• Hydraulic presses
• Metal-processing machinery
• Industrial automation
• High-pressure hydraulic systems
• Marine and offshore equipment
• Process machinery

PVCM-related control stages can support:

• Displacement control
• Pressure compensation
• Quick unloading
• Preload and unloading
• Electronic p/Q control
• Pressure feedback
• Horsepower/torque limitation

These functions are documented within Parker’s PVplus control architecture.

Expert Maintenance Tips

Do Not Treat PVCM Parts as Complete Valves

PVCMAUBN1 is documented as an elbow manifold, not a standalone proportional control valve.

Likewise, PVCMCKV1, PVCMCKV3 and PVCMCKV8 are connection plug sets, while PVCMPCNS is a pressure pilot cartridge.

Verify the KS45 Configuration

PVCMPCNS is identified as an NBR pressure pilot cartridge for KS45. Verify the pump model, control code, KS45 control version, seal material and original component number before replacement.

Do Not Arbitrarily Mix NBR and FPM

The listed components include both NBR and FPM configurations:

• PVCMPCNS → NBR
• PVCMCKV1 → FPM
• PVCMCKV3 → FPM
• PVCMCKV8 → FPM

Seal selection should therefore follow the original Parker configuration and the actual hydraulic-fluid and temperature requirements.

Match the Complete Pump Control Code

Parker’s PVplus control architecture supports pump displacements from 16 to 360 cm³/rev, but the individual PVCM component cannot be selected from pump displacement alone. The complete control configuration must also be verified.

Inspect the Complete Electronic Control Loop

For electronically controlled PVplus systems, inspect:

• Displacement transducer
• Pressure transducer
• Proportional pressure pilot valve
• Q-valve solenoids
• PVCM pressure compensator stage
• Electrical supply
• Feedback wiring

Parker’s official documentation identifies these as components of the complete p/Q control architecture.

Protect the Pilot Circuit From Contamination

Contamination in the pressure-pilot circuit can cause unstable compensator behavior, delayed response or incorrect pump displacement. During service, inspect the pilot cartridge, sealing surfaces, control passages and filtration condition.

Perform Dynamic Validation

After replacing a PVCM component, verify:

• Standby pressure
• Pressure compensation
• Displacement response
• Pressure command response
• Load-change behavior
• Unloading response
• Repeated-cycle stability

Use 100% Simulated Working-Condition Testing

For replacement components, a representative test bench should reproduce the actual PVplus hydraulic control chain:

Pump → PVCM control stage → Pressure pilot → Electronic command → Pressure/Displacement feedback

Testing should cover standby, pressure build-up, load changes, compensation, unloading and repeated cycling.

This provides a much stronger technical basis for in-place interchangeability and 100% simulated working-condition testing than dimensional inspection alone.