Double seat ball valves are proving their worth day by day in the fields of brewing, beverage technology, dairies and the food industry as well as in chemistry! The field of application of the APV DELTA DKR2 valve comprises the separation of two line sections with different fluids by two independent seals with intermediate leakage chamber and free drain to the atmosphere. They were especially developed for use in industries where the highest priority is given to the protection against the mixing of products.