Mixproof Butterfly Valves Guth mixproof butterfly valves. A safe way to separate incompatible liquids without the risk of dilution. Brochure Manual FIND OUT MOREPlease enable JavaScript in your browser to complete this form.First Name *Last NameCompany *Region *JohannesburgCape TownDurbanPort ElizabethProduct *Custom Skid DesignCheese ProcessingMilk ProcessingPipetitePipe Fittings & TubingPumping SolutionsSample HandlingValve SystemsPigging SystemsSelect the product you would like to receive additional information aboutEmail *Addtional InformationMessageSubmit