Pentair 470190Z Water Pressure Switch Replacement Kit Pool and Spa Heater

Match the listed heater families and thread

The current Amazon listing identifies this Pentair part as a pressure switch for MMX, MMX Plus, and PowerMax heaters with a 1/4-inch male pipe thread and SPNO contacts. Treat that exact-listing identity as more specific than the older generic title.

Compatibility checks

• Heater family: Confirm your heater is in the listed MMX/MMX Plus/PowerMax group before ordering.
• Thread size: Check that the old switch uses 1/4-inch MPT, as described by the seller.
• Contact type: The listing specifies SPNO; compare that with your existing control circuit.

Because pressure switches vary, use qualified service for installation. See the Amazon product listing.