Honda's high-pressure pumps are designed for moving clean, uncontaminated water -- excluding drinking water or flammable liquids -- from one place to another. The WH15 and WH20 (pictured) model pumps offer high pressure with a lower flow. The best application for these pumps is where higher pressure is required, such as sprinkler irrigation systems or use with hoses and nozzles. Honda's four-stroke engine ensures the pumps have low decibel levels.