Pressure Control Modules – PCM 20

The Polyhydron Pressure Control Module (PCM 20) is a manifold-based hydraulic unit specifically designed to control double pumps in a “Hi-Low” system. Its primary job is to efficiently manage high flow at low pressure and low flow at high pressure, which helps save energy and reduce heat in industrial machinery.

  • Check Mark Operating Pressure : High Performance Range
  • Check Mark Application : Industrial & Mobile Systems

About this item

The Polyhydron Pressure Control Modules – PCM 20 is designed to control double pumps in a Hi-Low hydraulic system for efficient pressure management. It consists of a high-pressure relief valve, a check valve, and a low-pressure unloading valve integrated into a single unit.

The module enables automatic unloading of pumps and also offers an optional solenoid-operated unloading feature for enhanced control and flexibility in hydraulic applications.

Nominal pressure and flow ratings
Model Max. pr. for High pr. relief
(bar)		 High pr. flow
(l/min)		 Max. pr. for unloading
(bar)		 Low pr. flow
(l/min)
PCM 20-06 315 25 100 160
PCM 20-10 315 60 100 160
Core Functionality
  • Hi-Low Control: At the start, both the low-pressure (high flow) and high-pressure (low flow) pumps deliver oil to the system.
  • Automatic Unloading: Once the system pressure reaches a set point, the module unloads the low-pressure pump back to the tank.
  • Pressure Relief: Only the high-pressure pump continues to supply the system, with its maximum pressure controlled by a built-in relief valve.

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