Taking a closer look at a typical weight flling unit proposed by Serac, one can see that the whole product circuit is designed with easy cleaning in mind. It involves no joints or gaskets that are hard to clean and subject to wear, but employs metal to metal valves with extremely clean closure and very few mechanical parts in direct contact with the product. It is very easy to clean, especially with effcient CIP equipment. Those proposed by Serac work in a closed sanitation circuit and make use of multidirectional sanitary spray balls for a higher impact of the liquid jets. Tanks are 100% self-draining, convexed shaped with no dead corners, fully inspectable and suitable for swab tests.