The Black Diamond Polyethylene Siphon Pump makes transferring liquids from 5-gallon pails fast and effortless, delivering a steady 2 GPM flow. Easy to prime and start in just 6–7 strokes, the pump continues working automatically with no further operation required. Designed with a vent cap to instantly stop discharge and a long flexible corrugated hose for controlled pouring, it’s built for convenience and safety. This pump is ideal for water-based fluids, detergents, soaps, waxes, antifreeze, and some mild acids.