Where is pressure typically applied in solenoid valves?

In solenoid valves, pressure is typically applied over the seat. This is fundamental to how solenoid valves function, as it allows the valve to be controlled effectively by the solenoid mechanism. When the solenoid coil is energized, it creates a magnetic field that moves a plunger or armature, affecting the position of the valve's internal components.

When pressure is applied over the seat, it helps hold the plunger down against the force of the spring, ensuring that the valve can switch properly between open and closed states as required. This application of pressure allows the valve to perform its role in controlling the flow of fluid or gas in a system efficiently.

The functioning relies on creating a differential pressure across the seat when the valve operates, which further emphasizes the importance of having pressure applied in this manner. By ensuring the pressure is applied over the seat, it supports the operation of the solenoid in varying states of system demand and ensures reliable sealing when in the closed position.