and staged heating applications

Built from premium American-made brass (C36000/C37000)

Common Questions: What causes a manual reset limit switch to trip

This single-pole double-throw (SPDT) switch is designed to replace the legacy AM-661 model

extending the service life of the valve internal components

Schneider Electric (Erie) AH24B020 Actuator 30067439-890 and staged heating applicationsThe Schneider Electric (Erie) AH24B020 Actuator is a professional grade, 2 position powerhead designed for rigorous hydronic heating and cooling systems. Built specifically for the Erie PopTop zone valve series, this 120Vac spring return actuator ensures a reliable normally open fail safe position during power loss. Its high close off capability allows it to maintain a tight seal under higher differential pressures, making it suitable for demanding