Uniquely designed as an EASY-TO-INSTALL, DO-IT-YOURSELF backup sump pump with included BUILT-IN Brass Dual Check Valve back-flow prevention device, including battery powered high water ALARM. The pump is mounted on the ceiling, keeping it clean and dry until needed. Uses water pressure to pump water! This design meets most local plumbing codes for back-flow prevention, includes many of the installation parts, and means greater efficiency and higher pumping rates. Connects directly to your home water supply using the INCLUDED push-fit pipe fittings, similar to "Shark-Bite Brand," for copper, PEX, or CPVC piping. Suitable for use with Radon covers. As we are asked many times, the difference between this model and the RB750. This model comes with a brass dual check valve backflow preventer, brass shutoff valve, tee, and adapter so it is very easy to install right out of the box. The Standard RB750 does not have these extras. For both models, you must supply the water pipe and 1" PVC pipe for the suction from the bottom of the sump to the ceiling. Make sure you can fill a 5 gallon bucket at your outside hose spigot, without the hose, in less than 40 seconds for this pump so you know you have enough water flow to feed it properly. When testing your water supply, if you have a water softener, filter, or frost-proof spigot, the test will be inaccurate. Call us for details if you're not sure about any of this. Keep in mind that a basic installation is about a three hour job in most cases so consider that accordingly when obtaining bids from contractors.