Pressure Control Valves in Hydraulic Circuit
Pressure control is the most important element in hydraulic circuit. Hydraulic components are designed to operate on a specific pressure range with capability to withstand some burst peak pressure. These components can be damaged if the working pressure exceeds its maximum pressure for a long period of time. The damage can injure nearby workers or damaging other equipment.
The pressure control serves as a pressure limiter to keep the working pressure below the lowest rated component in the hydraulic circuit. There are commonly six pressure control device in hydraulic circuit:
1. Relief valves
2. Unloading valves
3. Sequence valves
4. Pressure-reducing valves
5. Counterbalance valves
6. Brake valves
The basic principle of each of these valves is; a spring force balances a hydraulic force. The hydraulic force is produced by pressure acting on a given area. The valve spool will moves if the hydraulic force become greater than the spring thrust.
Categories: Hydraulic Circuits | Tags: Pressure Control Valves | Leave a comment