Operates only when liquid flow is required. Pump and motor stop instantly when discharge is closed. Diaphragm design eliminates troublesome shaft seal. Pump can be run indefinitely without damage. Ball bearing drive assures longer pump life. Excellent self-priming capability. Santoprene diaphragms and viton valves are standard. Maximum temperature of pumped liquid 130˚F. Permanent magnet motor - long life brushes. Fuse protected. Built-in cooling fan. On/Off Switch. Demand Switch. Max Pressure: 60.