Poppet Valve A poppet valve is a type of valve that controls the flow of liquids or gases in numerous different mechanical systems.
- This type valve consists of housing bore which poppet is held by a small spring force. The use of these valves in liquids is quite common.
- When a flow rate that is direction sensitive is needed, these valves are employed. For instance, opposite directions require different actuator speeds. The discharge (flow rate) can be set in a confined direction using the flow adjustment screw.
Working of Poppet Valve
When the valve is not under fluid pressure, spring tension pushes the piston against the stop and the poppet rests against the piston’s center hole
The spring contracts as fluid pressure rises, causing the piston to travel to the right. As the piston moves, the poppet closes the piston’s center hole, keeping the pressure within the specified range.
The poppet reaches the end of its movement when the valve’s pressure hits 1500 psi. When the pressure builds, the piston keeps moving to the right, unseating the poppet and opening the valve.
The poppet seats, the piston is forced to the left, and the flow through the valve ceases if the pressure falls below 1500 psi, due to the compressed spring. The poppet unseats, the poppet spring compresses, and the poppet is moved to the left by the fluid flow. This permits unrestricted fluid flow through the valve.
Application of Poppet valve
- Water systems and engineered machinery.
- Internal combustion engines, pumps, compressors, and hydraulic systems. Benefits of using Poppet Valve
- It is easy to use
- Dependable and capable of withstanding high temperatures and pressures.
- No leakage
- Suitable for high pressure application & has a long life