Backpressure spherical valve 012F DU 40

The backpressure DU 40 spherical valve for protection of the pipeline against the return stream of a working environment also received the name - the backpressure valve for the sewerage. As the limiter of the return stream the steel sphere covered with a protective layer acts. The spherical valve is used in the most different industries, in systems of city heat and water supply — but most the DU 40 backpressure valve was widely used in sewer installations.