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Pressure sequence valves are used to control the sequence of flow to various branches of a circuit.
The sequence valve opens when a specific adjustable pressure is reached and thereby permits flow to another branch of the hydraulic circuit.
Any pressure control valve that can have its tank line pressurised will have an external drain.
Pressure sequence valves are used to control the sequence of pressure to various branches of a circuit.
The function of the sequence valve is very similar to the function of the pressure relief valve except that, after the set pressure has been reached the sequence valve continues to tank.