[63] Circuit without brake valve
One application of pressure
relief valves is as brake valves; these prevent pressure peaks
which may otherwise occur as the result of mass moments of
inertia when a directional control valve is suddenly closed. The
animation shows an (incorrect) circuit in schematic form in which
the working line on the exhaust side has fractured due to the
absence of a brake valve.
The next animation (topic 64) shows the correct circuit.