This siphon pump is great for transferring liquids under the right circumstances. This pump will ONLY work if you are transferring a liquid to a lower location. The container where the liquid is originally placed must be above the container where the liquid will be moved to. This is because the action of this pump is mainly driven by gravity. So you cannot transfer a liquid to a location that is above the original container. The rubber bulb is only used to initiate the pump action. Gravity will then keep the liquid flowing until it runs out. The tubing is made of transparent plastic which allows you to see the liquid while it is transferring. This pump would be a good choice if you are transferring a volatile liquid such as gasoline. The reason being that this pump does not use electricity, which could be problematic and dangerous when transferring flammable liquids.
I made a flow rate measurement and found that at a height difference of 18 inches, this pump produces a flow rate of 917mL/min (approx.), which is about 4 minutes per gallon. The larger the height difference, the faster the flow rate.
To use this pump you must insert one end into the liquid to be transferred, and place your finger on the other end. You must make sure that the end that you entered into the liquid reaches the bottom of the container. Then, squeeze the bulb 2 or 3 times, to start the liquid flow. When done correctly, the liquid will now flow continuously, until it runs out, at around the rate of 4 minutes per gallon at 18 inches of elevation, and faster at higher elevation and slower at lower elevation.
The back of the box has instructions on how to use and Warnings, in both English and Spanish. It is well written in box languages.
