A.O. Smith 9006289015 Blocked Outlet Switch

The A.O. Smith 9006289015 Blocked Outlet Switch is a safety part used to shut off the water flow at the water heater outlet in case of blockage in HVAC systems. This may result from snagging, silty sedimentation, or other barriers. The switch works based on pressure increase within the outlet pipe being sensed. But when this pressure reaches a certain level, the switch is triggered to turn off the water supply to the heater in a bid to avoid damaging the heater. This switch is mainly designed for use with residential and commercial water heaters. Advantages of this switch include, safety through avoiding possible flooding and equipment damage, few repairs, and always hot water system through avoiding disruption by blockage.