Ball valve VARIVENT® D_L, B_L, R_L series

for water

Mixproof Valves with Lifting Actuator type D_L, B_L and R_L of series VARIVENT® are used for mixproof separation of incompatible media at flow path intersections. In the closed position of the valve (non-actuated position) always two seals are located between the two pipes. If one of the seals fails, leakage may directly drain to the open via the therefore provided leakage outlet of the valve without intermixing with the product being in the second pipe. Function When the valve is closed (non-actuated position), there are always two seals between the separated pipelines. If one seal is defective, the resulting leakage will be directed through the leakage outlet into the periphery, without mixing with the product in the second pipeline. This method enables that there is no mixing between the products from two pipelines.