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Main PageTechnical supportApprovalsAntipollution devicesCertificate NF CSTB No 412-M1-19/3 | Controllable backflow preventers BA, BM, CAa, CAb and controllable check valves EA, EB; valid till 23.01.2021

Certificate NF CSTB No 412-M1-19/3 | Controllable backflow preventers BA, BM, CAa, CAb and controllable check valves EA, EB; valid till 23.01.2021

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