Hydraulic Shock Absorber Units, type HSAU
8 sizes, range of max damping torque is between 1.500 and 195.000 NM per unit. Important! The selection of the HSAU is based on the value of damping torque, i.e. on the value of the back-flow pressure, and not on the nominal diameter DN. This implies that more sizes of HSAU can be applied to the same nominal diameter of the check valve.
More info: type HSAU