Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components
pressure control valves
Hydraulic Actuators and Control Components - Hydraulics and Pneumatics
As the name suggests, pressure control valves are the devices used to control the fluid pressure in a system.
B. PRESSURE CONTROL VALVES PRESSURE CONTROL VALVES 1. What are Pressure Control Valves ? • As the name suggests, pressure control valves are the devices used to control the fluid pressure in a system. • Functions: The pressure control valves perform one or more of the following functions: (i) To limit the maximum pressure in various circuit components as a safety measure. (ii) To maintain the desired pressure levels in various parts of the circuits. (iii) To unload system pressure, i.e., to change the direction of all or part of the flow when the pressure at a certain point reaches a specified level. (iv) To assist sequential operation of actuators in a circuit with pressure control. 2. Types of Pressure Control Valves The important types of pressure control valves and their functions are presented in Table 6.3. Table 6.3. Types of pressure control valves and their functions However, we shall discuss the construction and operation of the pressure-limiting, pressure-reducing, and sequence valves, in details, in the following sections. Note It may be noted that relief, sequence, counterbalance, and unloading valves are normally closed valves whereas the pressure-reducing valves are open valves.
Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components : Tag: : Hydraulic Actuators and Control Components - Hydraulics and Pneumatics - pressure control valves
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Hydraulics and Pneumatics
ME3492 4th semester Mechanical Dept | 2021 Regulation | 4th Semester Mechanical Dept 2021 Regulation