The VA08 non-metallic double diaphragm pumps are excellent pumps for use in a wide range of applications across many industries. The check valves are spring operated (made out of Hastelloy). This makes it possible to mount the pumps in every position. The pumps are available in 3 different materials for the pump body and 2 different materials for the diaphragms. This makes it possible to select the best solution for your application.