ASCO 8321A5 Valve

ASCO 8321A5 is a 1/4-inch NPT, 3-way quick-exhaust solenoid valve from ASCO’s 8321 family (Series 321) designed for rapid venting in pneumatic circuits. It features explosion-proof construction for use in hazardous locations and a 125 V DC coil, making it suitable for industrial environments where safety and reliability are paramount. The valve operates in a 3/2 configuration, providing two active ports and a quick exhaust path to atmosphere that enables fast depressurization of actuators and lines when energized. Thanks to its standard 1/4" NPT fittings and compact form factor, it integrates with common automation and process equipment without requiring special adapters. This 8321A5 variant is well suited for control panels and process lines in industries such as chemical processing, refining, and other hazardous-area applications where precise pneumatic control and rapid exhaust are critical for safe, responsive operation.