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Quick Information On Sump Pump Gallons Per Minute By Comparison 58 - 84 GPM
♦ Sump Pump Gallons Pumped Per Minute is something the manufacturer tests and publishes in a pump performance curve and chart so home owners and plumbers can determine which pump will meet the home owners water pumping needs.
♦ 58 to 84 GPM is the amount of water sump pumps can pump continuously every minute at the vertical height indicated in the pump performance chart.
♦ Horse power is not an accurate way to find a pump that is capable of pumping 58 - 84 GPM because some one-half HP pumps can pumps as much as other three-fourths HP models.
♦ 58 to 84 GPM is a lot of water being pumped so it is important to know how much GPM you really need. Here's a way to measure the GPM needed for your particular situatlon.
♦ Gallons pumped per minute is affected by the vertical height water is pumped from the bottom of the basin.
♦ The number of check valves and elbows found in the discharge pipe system affect the flow slightly because of friction caused - somewhere around one to three gallons per minute.
Why Is GPM Important?
Gallon per minute (GPM) pumped for submersible pumps is important because
♦ Higher horse power (HP) does not necessarily mean a higher GPM pumping capacity than another pump with lower horse power.
♦ For example, Zoeller and Little Giant do not make a submersible sump pump larger than 1/2 HP; however, the Zoeller M137 and M139 can pump more GPM at 10 ft lift than a Simer, Flotec or Wayne 3/4 HP pump.
♦ The actual GPM for your sump pump system may be lower than the published performance curve from the manufacturer because your system has more than a check valve and one 90 degree PVC elbow fitting. Fittings and check valves create additional friction and lower the GPM by a gallon per minute.
♦ The pumping performance you think is needed may not be what is really needed. During a heavy rainstorm, check the flow rate and calculate what GPM is really needed.
♦ Buying a bigger pump with more GPM is not always the best solution.
♦ Too much GPM capability is as bad as too little GPM. Too much short cycles the motor and wears it out faster. Too liitle GPM leads to basin overflow and flooding.
Regardless of what GPM your sump pump system requires we hope you will find PumpsSelection.com very helpful. Why not scroll down the page and see which sump pumps have a water flow rate of 58 - 84 GPM or 3,480 - 5,400 GPH (gallons per hour).
Most manufacturers measure gallons pumped by gallons per minute or minute per hour.
Therefore, we are presenting pumping capacity by gallons per minute or minute per hour.
If you need to know gallons pumped per minute, divide gallons per hour by 60.
The pumping lift varies per pump application. We have chosen a 10 ft lift because that is most common. If your lift is less than 10 ft, the pumping capacity will increase up to 20% more. For example, at 10 ft lift the Flotec E75VLT pumps 67 gallons per minute. At 5 ft. lift the Flotec E75VLT pumps 80 gallons per minute. At ten feet the Liberty 297-2 pumps 71 gallons per minute. At 5 ft. lift the Liberty 297-2 pumps 78 gallons per minute.
The vertical-height of the discharge piping system makes a difference. Make sure you measure your vertical-piping so the manufacturers performance water flow rate charts will be helpful. Most pump manufacturers provide gpm at 0 vertical-height, 5 feet vertical-height and 10 feet vertical-height.
Make sure you know the amount of water entering your sump pump basin in one minute during a heavy rainstorm. Buying a sump pump with a high gpm if you only need a pump with low gpm is useless; in fact some pump motors like the one found in the Basement Watchdog BW1050 are timed and the pump will run 10 seconds once the float switch triggers the pump motor to run. If the water flow in your pump basin is not at least 54 gpm or your pump basin is too small to hold much water, the motor of the BW1050 will keep runing until the 10 seconds is up even though there is no water to pump. A motor which runs without water to pump will burn out.
Find help in shopping and discovering the best pump selection for you at lowest prices.
When shopping for a sump pump, do not forget a new check valve. These heavy duty sump pumps are built to last so you may need a switch replacement before you need a new sump pump.
GPM, known as gallons per minute, is the volume of water that flows into a pump basin during one minute of time. This is the water flow rate. The water flow rate into the pump basin from the drain tile around the perimeter of the house determines the pumping rate at which the pump motor must be capable of pumping to keep the basin from over flowing.
Two things determine how fast the water is removed from the pump basin: the motor and the discharge system design. Generally the lower the motor horse power the lower the pumping capability. However, as mentioned above some one-half (0.5) HP sump pumps like Zoeller have the pumping capability of a 3/4 HP sump pump motor of other brands.
The vertical-height and horizontal distance and number of elbows making up the discharge system also affect the pumping capability. Most manufacturers only provide pumping capability based on the vertical-height of the discharge system. Water pumped vertically faces gravity resistance. For this reason manufacturers provide a performance chart designating how much water can be pumped per minute at a specific vertical-height. Some manufacturers like Zoeller provide performance capability based on total dynamic head which includes vertical, horizontal, elbow and check valve resistance. Here are the details for calculating total dynamic head Sump Pump Size Needed Calculation
♦ Measure the length of horizontal discharge piping, count the number of check valves, 45 degree and 90 degree elbows.
♦ Measure the diameter of your pump basin.
♦ During a heavy rainstorm measure how much water flows into the basin in one minute. If you measure for 15 seconds multiply the number of inches times four.
♦ Convert number of inches flowing into the pump basin to gallons of water. If the basin diameter is 18 inches, one inch equals one gallon of water. If the basin diameter is 24 inches, one inch equals two gallons of water. This will be the GPM. Multiply the GPM by 60 to obtain GPH (gallons per hour).
♦ Find a submersible sump pump that has a GPM flow rate compatible to your sump pump systems discharge vertical height.
♦ Take the horizontal discharge piping length, check valve and elbows friction calculation determined from the Sump Pump Size Needed Calculation and add this to your vertical height to determine the minimum shut off height required.
The video created by uswaterproofing explains how homeowners can be misled when looking at the box label which identifies the gallons pumped per minute by a specific branded sump-pump.
Is A Bigger Pump With More GPM The Best Solution?
Why do you think you need a bigger pump? Is it because your current sump pump cannot keep up with the water flow coming into the pit? A bigger sump is not always the best solution. There may be other issues causing the problem such as ...
♦ Look at the area surrounding your home. Are you the lowest house? Is your street lower than the streets in your neighborhood?
♦ Does the soil around the foundation slope away from the foundation? Build up the soil to a nice slope around your house. Good run-off during a heavy rainstorm makes a big difference. Is there run off coming from somewhere else near your house? Maybe a rock bed is appropriate. It is amazing how something like this does make a difference.
♦ Is the existing sump pit too small? A 24 inch diameter pit generally holds twice as much water as an 18 inch diameter pit. Removing an existing good functioning drainage system may not be best solution. Instead why not add a sister pit next to the existing basin? We have a 4 inch PVC pipe connecting our main basin to the sister basin. When the main basin is too full the overflow goes to our sister pit and those pumps run. We have four operating pumps instead of two. Without those four pumps we would have had a flooded finished basement during the most recent 7 inch rainfall in two days.
♦ Is the pump-float ON OFF point too close together? Short cycling wears the motor out faster. Automatic pumps have a preset ON OFF point which cannot be customized; however tying the float to an ON position and installing an external switch is easy. Learn how to convert your sump pump system to an external float switch. An external electronic switch is most reliable. We installed ours in 2011 and it is still going strong even though it gets a lot of work out.
♦ The actual GPM for your sump pump system may be lower than the published performance curve from the manufacturer because your system has more than a check valve and one 90 degree PVC elbow fitting. Fittings and check valves create additional friction and lower the GPM.
♦ The pumping performance you think is needed may not be what is really needed. During a heavy rainstorm, check the flow rate and calculate what GPM is really needed.
♦ Buying a bigger pump with more GPM is not always the best solution. Make sure you check your existing system.
♦ Wayne CDU980, CDU980E, EE980 and CDU1000; Flotec E75VLT, Zoeller M63, M95 and Glentronics S5050-ns, and S5050-usc3 offer a five year warranty.
♦ Though Zoeller N98, Liberty 280 and 290 and Glentronics S56050-ns do not offer a five year warrnaty, they could easily last longer than five years if an electronic switch such as HC6000 were installed because this switch lasts over seven years; in fact it has a lifetime warranty.
♦ The life of the Superior 92571 and Flotec FPZS75V and FLST7450 can also be extended beyond five years because the weakest part of them is the float-switch. Since they come with a piggyback switch, their float-switch cord can be tied to the discharge pipe and remain unused if the HC6000 electronic switch is installed and the pump cord from these units is plugged into the piggyback switch of the HC6000.
Pump Housing
♦ The housing used for sump pumps varies from cast iron, stainless steel, zinc and aluminun. Of these materials cast-iron will last longest. Cast iron is epoxy coated to prevent rust, dissipates heat much better especially when therr is continuous pumping, and is less likely to crack or wrap.
Float Switch
♦ The Zoeller, Liberty and Wayne floats are most reliable because they have a top guard protecting the float fron getting tangled or caught; they have an arm anchor at the bottom to prevent swaying; they are puncture proof.
♦ The Superior and Flotec pumps can be run manually if the float-switch fails.Just unplug the piggyback and plug the motor cord directly into the wall socket. Of course the pump cord must be pulled every time the water in the basin goes below the impeller; however in an emergency you still have a pump to use.
Solids Handling
♦ If debris or small pebbles collect in the basin, the Zoeller, Liberty, Little Giant, Superior are most capable of handling one-half inch to three-fourths inch spherical solids.
Other Factors
♦ Other factors to be considered are the cord length, shut-off height, diameter of pit required, amps, and float ON OFF height. Comparison of those features in table format will be available soon.
QUESTIONS ABOUT SUMP PUMP GALLONS PER MINUTE 58 to 84 GPM
How many GPM sump pump do I need?
The typical answer is based on soil type and house size. For every 1,000 square foot of home on sandy soil, 14 gallons per minute is pumped during heavy rain storms. On dirt soil, around 10 gallons is pumped every minute. On clay soil, 8 gallons is pumped per minute during heavy rains. To be more accurate, the next time it rains, count how many times the pump runs in one minute; subtract the difference in inches between ON and OFF and multiply it by number of times per minute. This indicates how much water your sump pumps is pumping.
How many gallons per hour does a 1/3 HP sump pump?
Keep in mind that not all 1/3 HP sump pumps move the same amount of water. The number of gallons a 1/3 HP pump can move away from you home ranges from 1,320 to 2,640 gallons per hour.
What's better 1/3 HP or 1/2 HP sump pump?
A 1/2 HP is better for those living in areas where the water table is high causing the pump to run even when it isn't raining or the house is sitting low or its neighborhood is low compared to the areas around it. A 1/3 HP pumping performance ranges from 22 to 44 gallons per minute. A ½ HP pumping performance ranges from 23 gallons to 72 gallons per minute at a ten foot vertical lift. It is important to review the manufactures published pump performance chart.
HC6000 Dual Level Electronic Switch. Owner sets ON and OFF point. No moving parts. Very Reliatable. Attach To Disharge Pipe System. PiggyBack Switch To Plug In Sump Pump Motor.
Liberty 280 Manual 1/2 HP Mid Range Head Cast-Iron Housing, Bottom Screen With Legs to Raise Pump Base, Handles 3/4 In Solids, 71 GPM At 10 Foot Lift Sump Effluent Pump $210 - $240
Liberty 283-3 Automatic Wide Angle Float 1/2 HP Mid Range Head Cast Iron Housing, Bottom Screen With Legs to Raise Pump Base, Handles 3/4 Inch Solids, 71 GPM & 4260 GPH At 10 Foot Lift Sump Effluent Pump with Series Plug and 35-Foot Cord $230 - $260
Liberty 287Automatic 1/2 HP Vertical Magnetic Float Cast Iron Housing, Bottom Screen With Legs to Raise Pump Base, Handles 3/4 Inch Solids, 71 GPM & 4260 GPH At 10 Foot Lift Automatic Submersible Sump Pump $225 - $240
Liberty 290 Manual 3/4 HP Mid Range Head Cast-Iron Housing, Bottom Screen With Legs to Raise Pump Base, 3/4 Inch Solids Handling, 71 GPM & 4260 GPH At 10 Foot Lift Sump Effluent Pump $280 - $300
HC6000 Dual Level Electronic Switch. Owner sets ON and OFF point. No moving parts. Very Reliatable. Attach To Disharge Pipe System. PiggyBack Switch To Plug In Sump Pump Motor.
Wayne CDU980E Automatic 3/4 HP Stainless Steel Vertical Float Top Suction No Solids handling 59 GPM & 3540 GPH At 10 Ft Shut-Off-Height 26 Ft. 10 Amps Sump Pump 3 yr Warranty 1 1/2 in Discharge $130 - $150
Wayne EE980 /4 HP Stainless Steel Housing Cast Iron Base Vertical Float Top Suction No Solids handling 58 GPM & 3500 GPH At 10 Ft Shut-Off-Height 26 Ft. 9.8 Amps Submersible Sump Pump $160 - $180
Wayne CDU1000 Automatic 1 HP Stainless Steel Housing Cast Iron Base Vertical Float Top Suction No Solids handling 88 GM & 3960 GPH At 10 Ft Shut-Off-Height 22 Ft. 9.8 Amps Submersible Sump Pump $190 - $200
Wayne CDU980 Automatic 3/4 HP Stainless Steel Housing Cast Iron Base Vertical Float Top Suction No Solids handling 58 GPM & 3500 GPH at 10 ft. lift Shut-Off-Height 22 Ft. 10 Amps Submersible-Sump-Pump
Little Giant 510852 10EC Series Cast Iron Tether or Vertical Float Shut off height 36 ft 57 GPM & 3420 GPH At 10 Ft 1/2 in Solids Handling Float ON 13-15 in. Float OFF 6-8 in. Submersible Sump Pump $340 - $360
Discover the best submersible sump pump, lowest prices and free shipping. Find the best pumps selection for your pumping needs today. Be an educated shopper by comparing features before you buy.
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Sump Pump Gallons Per Minute 58 to 84 GPM
♦ Sump Pump Gallons Pumped Per Minute is something the manufacturer tests and publishes in a pump performance curve and chart so home owners and plumbers can determine which pump will meet the home owners water pumping needs.
