Tecmark Latching Air Switch [SPNO] [25A] [Threaded] (TBS-310) magnacraft Installing the correct Pentair/Letro impeller

Installing the correct Pentair/Letro impeller can help restore hydraulic performance and improve the quality of the booster pump rebuild

Useful when original cartridges are loaded or worn

It supports clear operation through three air button inputs and an integrated thermostat-style control knob

That makes the small-size design a practical fit for tighter installations

and interacts with the pool surface

Tecmark Latching Air Switch [SPNO] [25A] [Threaded] (TBS-310) magnacraft Installing the correct Pentair/Letro impellerThe Tecmark latching air switch in SPNO format is designed for compatible threaded pneumatic control applications that require a maintained state single pole normally open switching function. Threaded latching switches are useful because they combine a secure mounting style with a control response that holds state after actuation. This replacement is especially useful when the original switch no longer latches, becomes intermittent, or is physically