Double diaphragm air-operated pumps for a range of fluid distribution tasks, including dosing, spraying, transferring, evacuating, and evacuation Double diaphragm air-operated pumps for a range of fluid distribution tasks, including dosing, spraying, transferring, evacuating, and evacuation. SAMOA provides a wide variety of material choices for chemical compatibility as well as to survive abrasion, temperature, and fatigue brought on by severe conditions. GREATER EFFICIENCY is how UP20 pumps differentiate themselves. More reliability; maximum fluid flow; less air used. MAXIMUM VERSATILITY: no stalling, no ice, dependable startup, extended air valve and diaphragm lives. Broad fluid and application compatibility is provided by metal pumps and a variety of seats, balls, and diaphragms. SIMPLE SERVICING. cleaned up and simplified upkeep. long-lasting and dependable components. In potentially explosive environments (Ex II2 GD IIB/IIC 95 °C), this model of pump is fully groundable and ATEX certified.