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Grid Controls M 310 Flow Switch [25A] [2" Slip] (57 F4 3135 T02) topsideoverlays Key Benefits Key Benefits The SPX1515Z2ES is a practical replacement for compatible Hayward spa systems that need renewed motor performance and cleaner long term operation Useful in larger plumbing layouts with flow based control A properly selected flow switch helps support cleaner installation and contributes to more dependable control response when flow conditions change
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