In clay soil, plan for a system capacity of 8 gallons per minute for every 1,000 square feet of home.Įxample: The home plans show a building footprint of 2,000 sq. On sandy soil, plan for a system capacity of 14 gallons per minute for every 1,000 square feet of home. New Construction: But what if it’s a new home and a system hasn’t been installed yet? In that case, here are some general guidelines: Therefore, your System Capacity is 18 gallons per minute. Because you have the smaller (18-inch) diameter basin, each inch equals a gallon. Also, keep in mind that the water level should never be allowed to rise above the bottom of the sump’s inlet pipe (coming in from the foundation drain tile.)Įxample: Using a ruler, you find that 18 inches of water are flowing into your sump pump basin every 60 seconds. If you find out that more than 30 gallons of rainwater flow into the basin per minute, the installer would be better off with a 24-inch-diameter basin. In the larger 24-inch-diameter basin, one inch of water is roughly equal to two gallons. To calculate how many gallons flow into the basin per minute (system capacity), use the following rules of thumb: With an 18-inch-diameter basin, one inch of water is equal to one gallon. Wait for one minute with the pump off, and then measure how far the water rose during that minute. The easiest way to perform this test is to wait for a very wet, rainy day, and then run your sump pump until the water recedes to the shutoff level. Therefore, the first thing that needs to be measured is the amount of water that drains into the basin during a high-flow period.Įxisting Construction: During a heavy rain, stick a ruler in the basin and measure how many inches of water flow into the basin in 60 seconds. It’s important that your pump can draw water out of the basin (or “sump pit”) faster than water flows into it. The first step is to determine system capacity. When you’re selecting the size of a sump pump, you need two pieces of information: System Capacity (the amount to be pumped) and Total Dynamic Head (where it will be pumped). But if it’s sized correctly, the pump will last much longer, and the homeowner will know it’s the right pump for the job. A pump typically has to be replaced every few years. In the ongoing battle for dry basements, sump pumps play a pivotal role. Call our toll free number 1-80 to speak to an expert today.Sump pumps are the heart of most drainage systems, and they must be properly matched to soil conditions, pit size and other factors to eliminate short-cycling while still providing enough capacity for peak events. Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Liberty 1100-Series Duplex Sewage Package Curves Liberty 1100-Series Duplex Sewage Package Installation Manual Liberty 1100-Series Duplex Sewage Package Brochure LIBERTY 1100-SERIES DUPLEX SEWAGE PACKAGES Please use the control panel guide linked below or contact Liberty technical for sizing the correct control panel. Note that these packages are built-to-order and a (separately sold) control panel is required for proper operation. The cover assembly also includes all necessary bolts and gaskets for mounting the cover to the basin. Features include a 4″ inlet hub with rubber pipe seal, toque-stop pump restraints, and a heavy duty, 1/4″ enamel coated steel cover with two 16″ diameter pump access covers and a 10″ diameter inspection cover with integral stand pipe for float tethering (fiberglass cover available upon request). The floats are tethered to a removable stand pipe/access cover assembly. The complete system is factory pre-assembled with the pumps, discharge pipe nipples, and floats pre-mounted in the basin. The basins themselves are heavy-duty structural foam and include either a 2″ or 3″ discharge. The premium Liberty sewage pumps available with each package include pumps from the LE40, LE50, LE70, LE100, LEH100, LEH150, and LEH200 series. Each unit includes a Liberty LE sewage pump and a 30″ x 36″/110 gallon capacity basin. The Liberty 1100-series duplex sewage ejector package systems are designed for use in multi-unit residential and commercial installations requiring the operational security of a duplex (two pump system).
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