QUICK EXHAUST VALVE (FESTO TYPE)

A Pneumatic Quick Exhaust Valve (Festo Type) is a compact, high-flow valve designed to rapidly vent the air pressure from an actuator, typically a single or double-acting cylinder.?? Primary FunctionIncrease Cylinder Speed: By connecting directly to the cylinder port, it allows the exhaust air from the return stroke to dump immediately into the atmosphere instead of traveling back through the control valve and long air lines. This significantly reduces back pressure and shortens the cycle time, achieving much higher piston speeds.Key Features (Common to Festo's SE/SEU series)3-Port Design: It has one Inlet (from the control valve), one Outlet (to the cylinder), and a high-flow Exhaust port (to the atmosphere).Automatic Switching: It uses a internal diaphragm or shuttle to automatically switch the flow path based on pressure:Forward Stroke: Air from the control valve pushes the shuttle, sealing the exhaust port and allowing air to flow 1 $\rightarrow$ 2 (Inlet to Cylinder).Return Stroke (Exhaust): When the control valve shifts, the pressure at Port 1 drops. The air being pushed out of the cylinder (Port 2) pushes the shuttle back, sealing the inlet port (1) and opening a direct, large-bore path to the exhaust port (3), allowing rapid venting 2 $\rightarrow$ 3.Models: Often available with (SEU series) or without (SE series) an integrated silencer to reduce noise.