Unison is proud to stock the Evoguard product series for vales, pumps and vessel dome fittings. The Evoguard ESL program fulfils the requirements on valve series in hygiene class IV. Its area of application comprises sensitive refreshment drinks without preservatives, as well as drinks distributed outside of the cold chain. New and innovative design details make both the seat valve and the double seat mixproof valve exceptionally conscientious guardians of product safety.