When siphoning is impractical or too time consuming, the home winemaker needs a pump. Diaphragm pumps are an economical, gentle method to move small volumes of wine. Note, this pump is NOT for use with hot water or boiling wort. 120F max temp. It is typically used for post fermented beer, wine, kombucha, cold brew coffee etc. This new take on an old favorite includes speed control. Now you can dial in the flow from 0 to 3 gallons per minute. Gentle, economical, flexible, and wow are all adjectives we would use to describe the performance. A diaphragm pump works by moving wine through one pulsating diaphragm into the next. In this design, as opposed to a centrifugal pump which has a small head spinning at high speeds, the shear value is small meaning the wine is not as "beat up". A diaphragm pump is self-priming, meaning that it will "pump air" creating suction that will pull liquid out of your container and into the pump head. This makes the pump very easy to use for the home winemaker. This pump comes with 1/2" barbed ports for easy connectivity. Comes with 6' tubing on both sides. 110 Volts, 0.5 Amp, 60 Hz. Includes a built-in pre filter to help prevent solid materials from entering the pump head and potentially damaging the diaphragms, which would prevent the pump from being able to move liquid. The clear plastic top of the pre filter unscrews for cleaning. Please note that some customers have had trouble unscrewing this cover to clean their filters. We suggest using a standard strap wrench if you are having difficulty with yours. The manufacturer offer a 1 year warranty.