Which type of valve allows for multiple machine operations sequentially and is commonly used in hydraulic systems?

The sequence valve is designed specifically to control the sequence of operations for various components in a hydraulic system. It allows for the sequential activation of multiple machines or actuators by regulating fluid flow. When one device reaches a specified pressure, the sequence valve opens, allowing fluid to flow to the next device in line. This ensures that operations occur in the correct order and helps optimize the efficiency and functionality of the hydraulic system.

In contrast, a counterbalance valve is primarily used to prevent uncontrolled motion of loads, particularly in lifting applications, by maintaining a constant pressure. A flow control valve regulates the speed of hydraulic actuators by controlling the flow rate of the fluid but does not necessarily manage the sequence of operations. A pressure relief valve, on the other hand, is designed to protect the system from excessive pressures by diverting fluid, ensuring safety rather than managing operational sequences.