Bosch Rexroth AG, H-4WEH...XE..., RE 24751-XE-B/04.16
If the valve is to be used at a reduced maximum pressure and in this connection
is to be mounted on connection surfaces of a different material, it might be
necessary to use a lower tightening torque in order to exclude any damage.
7.7.2 Hydraulically connecting the valve
Damage to the valve
If you install hydraulic lines and hoses under pressure, they are exposed to
additional mechanical forces during operation, which reduces the life cycle of the
valve and of the complete machine or system.
Assemble lines and hoses without stress.
De-pressurize the relevant system part.
Establish all connections; in this connection, observe the operating instructions
of the system.
Make sure that pipes and/or hoses are connected to all ports and/or that the
ports are closed with plug screws.
Carry out a special check to make sure that the cap nuts and flanges are correctly
tightened at the pipe fittings and flanges.
Mark all checked fittings, e.g. using a permanent marker.
Make sure that all pipes and hose lines and every combination of connection
pieces, couplings or connection points with hoses or pipes are checked for their
operational safety by a person with appropriate knowledge and experience.