The VA25 (HE) non-metallic double diaphragm pumps are excellent pumps for use in a wide range of applications across many industries. Those pumps are using the modern technology to make them the most effcient on the market! The air section is from Polypropylene, which makes the pump suitable to be installed in the most severe environments. The VA25 (HE) non-metallic is available in 3 different materials for the pump body and 9 different materials available for the diaphragms. This makes it possible to select the best solution for your application.