PVXS Hydraulic Open circuit pumps , Rexroth Axial piston variable High pressure pump

Typical Section of Open Loop PVX Pump

Displacement controls:

ES - Electric motor displacement control

HG - Handwheel displacement control (Special feature)

FE - Screw adjustment control (Special feature)

DF - Pressure compensator controlled

DQ - Mooring control

LR - Power control with pressure limiter

SP, SM - Displacement proportional to electric signal

DP - Displacement proportional to pressure signal

Case Flushing Requirements

A check valve must not be used in the drain pipe. The drain pipe must interminate below the oil level in the reservoir.

For all other conditions with low pressure <20 bar (<300 psi) and low flow (<10% of Qmax) case flushing is required.

For operation with special fluids HFB and HFC, case flushing is recommended.

Flushing Flow

Flushing flow via the pump case should be >1% of maximum pump flow. Maximum flushing flow depends on case pressure.

Introduction

• Axial piston pumps with swashplate design for reliable operation and long life.

• Pressure up to 420 bar. Rated speed up to 1800 min-1. Higher speeds possible.

• Oversize shafts and bearings.

• Rotating and pressure loaded parts are pressure balanced.

• Integrated pilot pump, filter and pressure relief valves available.

• "Building block" design gives these pumps a wide range of application.

• Fast response times.