The pneumatically switched flow (PSF) – water pump is based on a conventional centrifugal pump.

A switch unit is integrated in the pump, connected with the low-pressure system of the vehicle. If the coolant pump is switched on, a slide moves over the vane wheel and interrupts the volume flow. The coolant circulation is stopped, and engine warm-up accelerates. This principle can lead to significant fuel saving.

Special features

• Control unit PSF realises switching durations up to 0.1 seconds
• High efficiency

Product specifications

Operating pressure: 2,7 bar

Flow rate: 320 l/min up to 8.450 rpm