ASCO SA12A Pressure Switch Deadband Valve 3/4 In NPT

The ASCO SA12A is a Tri-Point automatic pressure switch featuring a deadband design and a 3/4" NPT process connection. As part of ASCO's Tri-Point family, this device acts as a pressure-actuated switch that uses a defined deadband—the intentional gap between the actuation and reset pressures—to determine when the electrical output should change state. The 3/4" NPT specification denotes the size of the process connection used to integrate the switch into piping or instrumentation lines. It is designed for automatic pressure-monitoring applications in industrial settings, providing a switch signal when the sensed pressure crosses the thresholds defined by its deadband. Deadband behavior helps stabilize operation in systems with fluctuating pressures by preventing rapid cycling near a threshold. The SA12A designation identifies a member of ASCO’s Tri-Point pressure-switch family, a line known for combining automatic switching with dependable performance in process control and instrumentation configurations.