The pneumatically actuated diaphragm valve of the future The new +GF+ DIASTAR plastic diaphragm valves from Georg Fischer set new standards in industrial piping system construction of the future. The valve has been designed and constructed according to the latest technology and the requirements of our customers. Measurable and readable stroke limits (minimal and maximal), pre-loaded spring sets for hazard-free opening of the valve, and a wide range of suitable accessories are of high value to the customer regarding handling and economical use. With modern design and methods it was possible to achieve optimal valve dimensions and weight. The price/performance ratio is excellent; please ask for our documentation.