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There are many types of PVC pumps, differing in design aspects such as direct action versus lever operated, piston rod versus piston pipe, single or double action, with or without a water seal. The valve designs vary from ball valves, rubber flap/butterfly valves and bicycle inner tube valves to bolt valves, pvc adapter valves, and washer valves.
Examples of PVC pumps are the [[EMAS pump]], [[Baptist pump]], the [[Canzee pump]] and the DTU pump. Some pumps are described in their own Akvopedia articles, reachable by clicking on the links above.
Some pumps, such as the [[EMAS pump]] are deep well pumps, and can pump water over a height difference of 40m. Others, such as the [[Canzee pump]] pump water up to 12-15 m deep. The [[DTU pump]] is used for extracting water from underground rainwater catchment cisterns.