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Pick up a pair of circulating pump flanges from Grainger to help connect your hydronic system pump to a water supply line. Find flanges to fit a wide range of pipe sizes in a variety of rugged materials, including cast iron, low-lead bronze, stainless steel, brass and more. Choose the operating temperature, maximum pressure, and other features that can fit your application. Shop Grainger today for durable circulating pump flanges.Close

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