Check Valves Type SBO 21
Product Code: Check Valves Type SBO 21
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Describe: Type SBO 21: Gravity circulation checks are used to prevent gravity circulation in heating and hot-water installations. Depending on the type, they are fitted by union nut to the circulation pump or with a threaded connection at the pump outlet. The SBO types are available from DN 3/4 to DN 1 1/4.