Pentair AGS Switch Service Part, 140F, for Heater | 42002-0025S category_fireplace-accessories A properly functioning pump improves

A properly functioning pump improves overall spa longevity

The Infratech 18 2305MG W61 is a specialized Marine-Grade Flush Mount Frame designed for the largest 61 1/4-inch Infratech W-Series and WD-Series heaters

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Pentair AGS Switch Service Part, 140F, for Heater | 42002-0025S category_fireplace-accessories A properly functioning pump improvesWhat This Part Is Used For Pentair 42002 0025S AGS Switch Service Part 140F is a replacement automatic gas shutoff safety switch for compatible Pentair heaters. It monitors temperature conditions and supports safety shutdown when required. Why This Part Matters A failed AGS switch can prevent the heater from operating or can compromise safety protections. Replacing it restores proper safety control and reliable heater function. Correct safety