The Verderair high pressure series is especially suitable for charging filter presses. The higher the pressure that is achieved, the dryer and therefore lighter the filter cake will be. This results in cost savings of disposal of the filter cake. Verderair high pressure pumps are constructed to be self-regulating for filter press feeding. The high pressure pumps can run dry safely, will not over pressure, has an excellent self priming capability and is very easy to start up.