Your First Choice for Pumps and Pump Systems
Call Icon Call (305)-754-0677 M-F 8am - 4pm EST | Contact | FAQ

Liberty Pumps Manual (Non-Automatic) Sump, Effluent And Sewage Pumps

Liberty Manual (Non-Automatic) Sump, Effluent And Sewage Pumps

Liberty heavy duty, manual (non-automatic), sump, effluent and sewage pump, 2" solids handling with 20' cord. Single and three phase units can be used for simplex or duplex installations. All pumps are rated for continuous used if totally submerged.


• Sewage Pumps Technical Data

• Sewage Pumps Accessories
Liberty Submersible Sewage Pumps Capacity In Gallons Per Minute
Series HP Total Dynamic Head (TDH) Shut-off
(feet)
5' 10' 15' 20' 25' 30' 35' 40' 45' 50'
Gallons Per Minute (GPM)
LE40 4/10 125 95 52 - - - - - - - 19'
LE50 1/2 135 108 78 40 - - - - - - 25'
LE70 3/4 145 120 90 60 15 - - - - - 28'
LE100 1 - 150 134 112 90 50 - - - - 36'
LEH100 1 - - 200 180 150 130 100 70 42 15 52'
Liberty Pumps Optional 3" Cast Iron Flange For Sewage Pumps # K001222 <br>Liberty Pumps Optional 3" Cast Iron Flange For Sewage Pumps # K001222
$55.00

Questions & Answers

No. A system should be sized to the pump performance not the horse power. A larger pump could cause to much pressure for the system. The pump size should be based on the performance of the pump, not its horsepower rating.
For a single float you simply adjust the tether length of the switch to achieve the proper pumping range. For a two-float installation, you would adjust the distance between the floats.
Although not recommended, it can be done if the proper voltages are being connected, i.e.: 120 volt current to 120 volt switch. Wrong voltages could lead to failures if there are electronic parts in the circuit.
This is a violation of the National Electrical Code.
The cable used on float switches is not rated for direct burial. Therefore, it should not proceed beyond the junction box unless it is inside a conduit.
No. Sewage pumps are designed to operate for short periods of time. Running a sewage pump for too long can cause the pump to overheat. Sewage pumps are filled with oil, the pump seal fails due to fish waste or because the motor overheated the oil will be discharged into the water feature and kill the fish and plants. When the motor cools water will be drawn into the motor cavity and “burn “the motor windings.. Using a sewage pump in any kind of water circulation application, will void the warranty.
Yes, but the pipe size should not be reduced smaller than the pump solids passing capabilities. Reducing the pipe will increase friction causing the flow rate to decrease. The pipe size depends on the system requirements. Generally, the minimum diameter pipe size is 1 1/2” for effluent pumps but local codes may dictate pipe size.
Refer to local codes. A smaller basin will hold less water per inch causing the pump to cycle more often. We recommend using a 18" diameter basin.
The air vent hole allows air trapped under the check valve to escape. A symptom of not having an air vent would be the pump runs but no water is being discharged.
We suggest that you install the check valve in a horizontal (side-to-side) position instead of vertical (up-and-down). When the pump shuts off, the solids and liquid in the pipe can settle back against the check valve. If solids settle on top of a check valve flapper in a vertical position, it is possible for the solids to prevent the valve from opening again. . This will cause the pump to run without discharging the waste. The pump will damage itself, and sewage or effluent will back up.
No. Sewage pumps are designed to operate for short periods of time. Running a sewage pump for too long can cause the pump to overheat. Sewage pumps are filled with oil, the pump seal fails due to fish waste or because the motor overheated the oil will be discharged into the water feature and kill the fish and plants. When the motor cools water will be drawn into the motor cavity and “burn “the motor windings.. Using a sewage pump in any kind of water circulation application, will void the warranty.
Most sewage pumps com with a 20 foot cord as standard. . If there is no outlet near the sewage pit, we suggest that you have an outlet installed there by a professional electrician.
Sewage and effluent pumps are designed to pump things that usually go down a residential drain. Sewage pumps not tested with other liquids so we cannot say whether they will be chemically compatible with what you need to pump. Sewage/effluent pumps should not be used for anything other than residential sewage or effluent applications. Never pump anything flammable!
It is not possible for us to maintain lists of “qualified” people that we could recommend. You would need to check your local “Yellow Pages” etc. for qualified an competent people. Why should I use an external switch? Two reasons: (1) to keep the pump partially or fully submerged and (2) to provide for an adjustable pumping range for proper dosing.
Pumps rated for effluent applications usually have a solids size rating of 1/2" to 3/4" spherical diameter.
This depends on the application and proper system design. Septic systems that are too small, abused by using strong caustic drain openers, and improperly maintained can cause significant reduction in the pump’s life.
Pumps that are rated as “Sump/Effluent” by the manufacturer can be used in the septic system. Only a pump specified as being suitable for effluent or sewage should be used in a septic system.
Most codes require a check valve and a ball valve to be installed on the discharge line of each pump in the system. If the total volume of liquid capable of draining back into the pump chamber is greater than approximately 25% of the volume the pump will cycle. When a check valve is installed, all piping must be below the frost line. As always, consult your local codes.
We do not sell parts….Installation and parts manuals are provided only as reference tools. Neither the manufacturer nor King Pumps makes any representation or warranty of any kind to the Buyer that he or she is qualified to neither install nor make any repairs to the product. In fact, the manufacturer and King Pumps expressly state that installation, repairs and parts replacements should be undertaken by qualified and competent technicians or contractors and not by the Buyer. The Buyer assumes all risk and liability arising out of his or her installation or repair to the original product.
Some sump, sewage, and utility pumps have a tag attached near the end of the power cord that shows the pump’s model number and date code. The date code will be marked as “date code”, “code”, or “MOD”. Also, all pumps have an information label on the pump that has the model number and date code on it. Date code is usually a combination of letters and numbers.
Residential pumps labeled for “sewage” can pass up to 2” solids. A pump labeled as an “effluent” pump can handle up to ¾” solids. Commercial sewage pumps will pass 3” solids of more depending on the discharge size.
“Solids” do not mean things like bolts and stones. “Solids” mean things that can be broken up by human hands and that normally can be flushed down a toilet. Most sewage pumps have a thermoplastic impeller that could be damaged by very hard items.
No, a “grinder” pump has an impeller that is made like blades. It can cut up, or grind up the sewage being passed through it. Sewage solid handling pumps do not that. They are called “solids handling” pumps since they simply pass the solids through mostly intact.
Never use a smaller diameter pipe than the size of the pump’s discharge. Use minimum 2” pipe. You might have to use larger diameter pipe if you have to push a long distance. Be careful with this though. See the next question.
If a pipe of too large a diameter is used, the flow rate of the discharge can be too slow. This can cause the solids to settle out and lay in the pipe. Over time, the sludge that builds up will cause blockages in the pipe. The minimum flow rate of sewage and other liquids containing solids is 3 feet per second. If you are designing a sewage run for your home, consult an engineer for help in determining proper pipe sizes.
DO NOT use an extension cord. It is MUCH better to plug the pump into a dedicated outlet that is fed by a circuit breaker or fuse that feeds power ONLY to that outlet. This ensures that the pump will receive proper voltage. If there is no outlet near the sump pit, we suggest that you have one installed there by a professional electrician.
The main difference is the size of the solids in the liquid. Effluent is any liquid that has gone down a residential drain. It can contain solids up to ¾” in size. This is normally considered to be water containing soap, laundry discharge, water from sinks, etc. Sewage has also gone down a residential drain but can contain solids up to 2” in diameter.
Most sewage pumps come with a tethered-style float switch for their efficient operation... You can use a vertical-style switch but the solids contained in sewage & effluent can block the operation of a vertical-style switch. The contents of sewage and effluent can coat the contacts of an electronic-type switch and prevent that from working very long.
No. Feminine products should not be flushed when a sewage pump has to handle that. Sewage pumps can have problems passing those items and could jam. The Liberty grinder pump will handle feminine products.
You need to know the amp draw of the pump and multiply that by the voltage to get the watt usage of the pump. Example: Pump draws 5 amps on 115 volts. 5amps x 115volts = 575 watts. Give this information to the Generator supplier to size the right product. An AC motor can draw three to five times its regular amp draw for about ½ second when it starts up. So to run our example pump, we need a generator that can supply a startup surge of at least 2875 watts (575 x 5) and can continue to supply the 575 watts as the pump runs. This is accurate if the pump is the ONLY thing the generator is going to supply power for. If you also want to run lights, etc. then that needs to be added to the generator size. You should contact a Generator Supplier for the final selection.
This depends on the application and proper system design. Septic systems that are too small, abused by using strong caustic drain openers, and improperly maintained can cause significant reduction in the pump’s life.
To keep the pump partially or fully submerged and to provide for an adjustable pumping range for proper dosing.
Pumps that are rated as “Sump/Effluent” by the manufacturer can be used in the septic system. Only a pump specified as being suitable for effluent or sewage should be used in a septic system.
The depth of your pump will depend on your local codes. Because of the gases involved with septic tanks, we recommend keeping the pump completely submerged. This will prevent the gases from attacking the watertight gaskets.

(?) Ask a question about Liberty Manual (Non-Automatic) Sump, Effluent And Sewage Pumps
Back to Top