Nominal pressure 400 bar (5690 psi), NG 50, 80, 110/NG 40, 63, 100 according to DIN 24 550
High pressure filter with differential pressure controlled cold-start valve
The filterhead contains a cold-start valve which guarantees under all operating conditions that the hydraulic system is provided only with filtered fluid.
When the differential pressure rises above the opening pressure of the cold-start valve (e.g. due to high cold-start viscosity or due to a not serviced filter element), a partial flow is returned to the tank via the filter heads` tank connection.