ASCO 21011 is a four‑way solenoid valve with 1/4‑inch ports and a 120 V AC coil. It uses a 20‑watt coil and is rated for up to 125 psi, suitable for dry air service in pneumatic control applications. In compact automation layouts, it directs airflow between ports to control a small actuator or reroute lines in limited-space systems.
