The XPi Series by-pass valve is a purpose-built solution designed to allow continuous PTO operation without damaging the hydraulic system or reducing pump life. Mounted directly to the rear of the XPi pump, it provides a simple and highly effective way to manage flow when the system is not actively in use.

Key Features

• Direct mount design on XPi pump rear housing

• Available in 12V and 24V solenoid configurations

• Compatible across full XPi range (12cc to 130cc)

• Choice of Hirschmann or Deutsch connectors

• Integrated drain port for proper oil circulation

Function & Operation

• When de-energised, the valve recirculates flow internally from outlet to inlet

• Prevents pressure build-up and heat generation during idle operation

• When energised, the pump operates normally, delivering full system flow

• Requires a drain line to tank (below oil level) for cooling and lubrication

This makes it ideal for applications where the PTO cannot be disengaged, ensuring the pump can run continuously without overheating or unnecessary wear.

Benefits

• Eliminates risk of oil overheating in continuous PTO setups

• Extends pump service life

• No need for complex system redesign or additional valving

• Maintains system simplicity and reliability

Typical Applications

• Tipper trucks with constant-drive PTOs

• Truck-mounted hydraulic systems requiring standby operation

• Equipment where frequent start/stop of PTO is not practical

Why Choose Concept Hydraulics?

• Supply of genuine Hydro Leduc XPi components and accessories

• Expert advice on correct by-pass sizing and installation

• Melbourne-based support with Australia-wide delivery

• Proven experience in truck hydraulic system optimisation