Quick Exhaust Valves facilitate accelerated movement of the cylinder rod or valve actuator. A Quick Exhaust Valve is a 3/2 valve with an extra large exhaust orifice designed to fit directly onto the cylinder port connection.
The function of a quick-release valve is to rapidly exhaust air from the controlled device. It is normally located adjacent to the controlled device, rather than requiring exhaust air to return and exhaust through the control valve. This decreases release time.