ASCO 8321A3 is a 3-way, normally closed, pilot-operated solenoid valve with 1/4-inch pipe connections designed for quick exhaust in pneumatic systems. The valve is driven by an AC coil and is specified for instrument-air control from 10 to 200 psi, enabling rapid venting and reliable switching in automation circuits. Commonly used in automated manufacturing and process-control applications to direct or vent compressed air in response to electrical signals.
