Selecting a Sump PumpSump pumps are used to move accumulated water from a sump pit. A sump pit, usually located in the basement of a residential home, is really just a hole in the ground to collect water. The water accumulating in the sump pit can come in, either from several drain locations, or from natural ground water welling up. Sump pumps are installed where basement flooding is seen as a problem. It is also used to remove dampness, and to lower the water table below the foundation. The sump pump removes the water from where it has collected in the sump pit, and pipes it away from an area away from where it would be considered hazardous. There are a few considerations to make while you are selecting a sump pump for your application. Some of the considerations to consider include the type of pump operation, horsepower, phase and voltage, and GPH (the number of gallons of water it can move per hour).
The selection of the appropriate sump pump will depend on the application in which it is used. Consider these factors before making your final selection: Manual operation vs. Automatic Operation: In many instances, automatic operations will be more convenient to homeowners, because they don't require you to be at your home in the event of a suddenly developing water problem. With automatic operation sump pumps, the pump is wired with sensors in the pump pit that activate the sump pump in the event of rising water levels. Manual operation sump pumps can be turned off when appropriate.
Horsepower: The horsepower of the pump engine will be one factor in determining the rate of water pumping that your pump is capable of. Sump pump engines have a wide range of horse power, from less than 1/3 to 1+ for some industrial models.
Head pressure: The head pressure of the sump pump is the maximum height that it will pump ground water. For example, a pump with a 20' max head (also known as a shutoff head) will pump water up to 20' before it loses flow. Described technically, head pressure can be expressed with the equation P=ypg, where y is the fluid column height and p is the fluid density. Other factors than can determine the overall head pressure include friction loss from long horizontal runs and loss from bends/elbows.
Cord length: The cord length is the length of the power cord from the pump unit to an electrical outlet in your house. You should consider the cord length of any power cables running from the sump pump unit or accessories associated with the sump system, including the cord of and special switches connected to the main unit.
Phase & Voltage: Sump systems are offered in single phase and three phase. The voltages available include 115 volt, 230 volt, and 460 volt.
Alarm and Backup system: An alarm and backup system will make you aware of any problems with the sump pump system if they begin to fail to operate properly.
Brand: The following companies provide sump pumps for residence owners: Basement Watchdog, Eco-Flo, Little Giant, NexPump, PHCC Pro Series, Simer, StormPro, Sumpro, Superior Pump, Wayne, Zoeller.