Pressure Control Modules – PCM 20-16

The Polyhydron PCM 20-16 is a pressure control module specifically designed for Hi-Low hydraulic systems that use double pumps. Its primary function is to manage the flow and pressure from two separate pumps to optimize efficiency—typically unloading a high-flow, low-pressure pump while a low-flow, high-pressure pump maintains system force.

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

About this item

The Polyhydron Pressure Control Modules – PCM 20-16 is designed to control double pumps in a Hi-Low hydraulic system, ensuring efficient pressure management and system performance. It integrates a high-pressure relief valve, a check valve, and a low-pressure unloading valve into a single compact unit.

The module allows automatic unloading of pumps and offers an optional solenoid-operated unloading feature for improved control and flexibility in various 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 20-16 315 100 100 160
Operational Highlights
  • Automatic Unloading: When system pressure exceeds the unloader valve setting, the low-pressure pump is automatically diverted to the tank.
  • Optional Solenoid Venting: You can add a solenoid valve to remotely unload both pumps or just the low-pressure pump for better system control.
  • Fluid Requirements: Designed for mineral oil with a viscosity range of 10 to 380 cSt and temperatures between -20°C and +70°C.

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