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ST-5 Flow Switch (high flow)
$106.53
ST-5 Flow Switch (high flow). A flow switch detects whether water is moving through the system and signals accordingly, commonly used to control burners, motors, or auto start-stop functions.
On hot water machines, a flow switch is a safety interlock — it prevents the burner from firing when there's no water flow, which would otherwise destroy the coil in short order.
Flow switch failure typically shows as a burner that won't fire, or one that fires when it shouldn't. Both are worth addressing immediately on a hot water system.
Grime Task Force stocks valves, filters, and control components across the range because these are the parts that protect everything expensive on a rig — and the parts most likely to be the actual cause when a machine starts behaving badly.
Frequently Asked Questions
What is this component? ST-5 Flow Switch (high flow).
Why does this part matter? On hot water machines, a flow switch is a safety interlock — it prevents the burner from firing when there's no water flow, which would otherwise destroy the coil in short order.
What should I check before ordering? Thread size and type, pressure rating, and chemical compatibility with what your system handles.
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