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The Apollo® 61 Series "soft seat" check valve offer reliable tight shut-off protection against reverse flow and corrosion-resistance using proven ASTM quality materials made in the USA. Ideally suited for hydronic heating and other low flow applications. Soft seat allows more resistance to vibration and may be installed in both horizontal and vertical upward flow applications.
Apollo® 61-500 Series 61-503-01 In-Line Check Valve, 1/2 in, FNPT, Bronze