The Grid Controls Flow Switch [M-2] [Pilot Duty] [1-1/2" Slip] (M-2) is a replacement heater parts component from Grid Controls, selected for compatible pool, spa, or bath equipment repairs. The listed part number is M-2, making it easier to match this item against an existing component, parts diagram, or previous service record. Key listed details include M-2, Pilot Duty, 1-1/2" Slip, 1-1/2", which should be compared against the original part, equipment label, or owner documentation before ordering. Heater parts should be matched carefully because voltage, plumbing size, sensor placement, element length, and control compatibility can vary significantly between spa and pool systems. Using the correct replacement helps support safer operation, proper heating performance, and a cleaner repair process. If you are unsure about compatibility, compare photos, measurements, and model information before installation. Genuine replacement style item from Grid Controls for compatible heater parts applications Use part number M-2 to help confirm the correct match Listed details include M-2, Pilot Duty, 1-1/2" Slip Helps restore proper fit, function, and serviceability when the existing part is worn or damaged Recommended for pool, spa, or bath service where compatibility has been verified
![Grid Controls Flow Switch [M-2] [Pilot Duty] [1-1/2" Slip] (M-2)](https://cdn.shopify.com/s/files/1/1751/9347/products/26-340-2100_xl.jpg?v=1486186750&width=480)
