Submersible Dewatering Pumps
Our pumps are light weight, portable, sturdy. We manufacture quality products. We also provide after sales service with due care and maintenance.
Having a few important pieces of information can make the selection process go pretty quickly. These include the following:What is the liquid being pumped?
What is the liquid being pumped?
What is the specific gravity of the liquid being pumped?
What is the position of the pump relative to the liquid being pumped?
How many gallons per minute do you need to pump?
Voltage & Phase requirements
What is the total dynamic head (TDH) of the system? Usually expressed in feet of head, TDH includes all the resistance to flow that the pump needs to overcome.
his is the single most asked question in the pump business. Even though we refer to it as suction lift, pumps do not actually lift liquid. They create a void by evacuating the air in the line, and atmospheric pressure on the liquid pushes it up the hose and into the pump. To make things simple, the rule of thumb for most self-primers is a maximum 25-ft vertical suction lift. That said, it is always best to locate your pump as close to the liquid being pumped as possible. Pumps have the ability to push water from the discharge side of the pump far greater distances. Depending on the type and horsepower, discharge heads can range from 15 ft to well over 1,000 ft or more. Remember, not all pumps are self-primers!
Sewage Pumps
In residential applications, sewage is pumped from a basin by a submersible sewage pump. The sewage includes soft solids up to 2” in diameter. The pump is installed at the lowest point in the basin and pumps the liquid to a sewer system or a septic tank.
When sizing a sewage pump we look at two things: Flow and Head. The amount of flow you need will be dependent on the size of the basin and the actual inflow of the sewage. Larger flow requires more horsepower. The amount of head you have is calculated by adding the vertical distance the sewage is being pumped from where the pump sits to where it is being discharged and the friction losses through the piping. If you need help selecting the right pump, please give us a call or Email.
If you know the model number, a quick search may be able to yield your answer. If not, a “sewage” pump should be able to pass up to 2” spherical solids. If the pump is in a septic tank and is screened prior to entering the pump chamber you may have an effluent pump. In which case, it can handle up to ¾” solids.
If your pump is using a piggyback float (or not directly wired into the motor) unplug it and plug your pump directly into the outlet. The pump should start up right away. Do not let it run for more than a minute or so as it may overheat. To test the float switch, or if your pump has a float switch incorporated into the motor, use a stick or another nonconductive device to lift the float into the “on” position.
Stainless Steel Submersible Dewatering Pumps
1. Suspended SolidsThe most prevalent cause of mine dewatering pump failure is clogging from gritty, suspended solids and slurry. Water that makes direct contact with the operation is often dirty, containing foreign materials such as drill cuttings or solids generated by underground ramp traffic. When combined with the clean water that is removed from an aquifer, the result is a slimy texture that can clog pumps.
The key to overcoming this challenge is proper sump design. Clean water should be collected at the source, while abrasive solids-laden water should be separated into an isolated area within the sump.
2. Corrosion
The fluids in mining applications are among the most volatile a pump can move. From superheated water laden with pyrite, iron or sand, to emulsified brine phase drilling fluid, there is no shortage of liquids that will punish a pump over time.
If a pump is constructed using solid metallurgy, the corrosion process can be slowed to a degree. Stainless steel pumps are preferred in these applications, including one new series of submersible dewatering pumps that are manufactured using SCS14, a cast equivalent of 316 stainless steel.
Even the hardiest equipment can succumb to corrosion, so it is important to make use of sacrificial anodes to increase the life of cathodic protection. An anode made of metal with a lower electrode potential—such as magnesium, zinc or aluminum—will take the brunt of corrosion during the pump’s application, protecting the metal that composes the pump. These protection plates must be monitored and replaced before they corrode completely.
3. Impact
This is as simple as it sounds: If a pump is not kept sufficiently away from mine traffic, there is a greater risk of crushing the pump with larger, heavier equipment.
Location is key, and keeping a pump away from the mine’s primary activities can mean the difference between getting the job done and halting everything for a costly pump replacement.
4. Overheating
Overheating can occur in any pump application—and mining is no different. If water levels are too low in the sump during prolonged operation and the unit’s control panel lacks any sort of underload protection, the pump will run dry and overheat.
Suspended solids also can cause overheating by accumulating in the cooling chamber and, if concentrated enough, around the motor frame. Suspended solids are another reason to carefully monitor water levels and make sure dirty water is kept separate from clean water.
5. Cord Damage
When a pump’s power cord is cut or otherwise damaged, water can pass into the copper conductors through the point of cable entry and wick back to the motor. This will lead to motor failure or a short circuit in the cable.
Pulling on the cord during improper lifting or moving of the pump is often the culprit. This kind of cord damage is a symptom of hasty mining operations and results in costly repairs. Careful handling of pumps is necessary to keep cable entry intact.
6. Unexpected Culprits
While this may come as a surprise to some, about 20 percent of all mining pump failures stem from clogs caused by everyday materials.
Chief among these culprits are earplugs, which all workers need and often discard; assorted types of fibers, such as the steel fibers used to reinforce shotcrete; and blasting wire, which can wrap around the pump’s impeller.
All of these materials are ubiquitous in mines, which makes them all the more likely to cause clogging issues.
Any one of these items, if improperly discarded, can jam a pump’s impellers. It is not uncommon for a mining operation to send a pump to a distributor for repair, only to discover that improperly discarded debris has caused the unit to fail.
The key to overcoming this challenge is proper sump design. Clean water should be collected at the source, while abrasive solids-laden water should be separated into an isolated area within the sump.
If a pump is constructed using solid metallurgy, the corrosion process can be slowed to a degree. Stainless steel pumps are preferred in these applications, including one new series of submersible dewatering pumps that are manufactured using SCS14, a cast equivalent of 316 stainless steel.
Even the hardiest equipment can succumb to corrosion, so it is important to make use of sacrificial anodes to increase the life of cathodic protection. An anode made of metal with a lower electrode potential—such as magnesium, zinc or aluminum—will take the brunt of corrosion during the pump’s application, protecting the metal that composes the pump. These protection plates must be monitored and replaced before they corrode completely.
Location is key, and keeping a pump away from the mine’s primary activities can mean the difference between getting the job done and halting everything for a costly pump replacement.
Suspended solids also can cause overheating by accumulating in the cooling chamber and, if concentrated enough, around the motor frame. Suspended solids are another reason to carefully monitor water levels and make sure dirty water is kept separate from clean water.
Pulling on the cord during improper lifting or moving of the pump is often the culprit. This kind of cord damage is a symptom of hasty mining operations and results in costly repairs. Careful handling of pumps is necessary to keep cable entry intact.
Chief among these culprits are earplugs, which all workers need and often discard; assorted types of fibers, such as the steel fibers used to reinforce shotcrete; and blasting wire, which can wrap around the pump’s impeller.
All of these materials are ubiquitous in mines, which makes them all the more likely to cause clogging issues.
Any one of these items, if improperly discarded, can jam a pump’s impellers. It is not uncommon for a mining operation to send a pump to a distributor for repair, only to discover that improperly discarded debris has caused the unit to fail.
Stainless Steel Submersible Dewatering Pumps can be used for muddy, dirty, contaminated, water with suspended solids
Maximum head = 70/mtrs and maximum discharge = 7500 LPM
Submersible Dewatering Pumps SL Series
YesCF8M, 904, 904l, 316l, 316, 304, WCB and Other MOC for Specific Applications.
Input Power of Specific Voltages and Frequency Configurations.
Can Be Made Suitable For Sea Water Handling, Effluents, And Other Corrosive Liquids.
All Cast Parts in Investment Castings.
Dry Motor With Class “F” Or Class “H” Insulation
Yes, you can. Some of our pumps are sold with a prefix power supply cable (e.g. for deep insertion into a well) but the cable can be lengthened to suit installation needs, provided that the work is performed by competent personnel to prevent that the cable junctions became the cause of water infiltration or dispersion that can damage the pump, or worse, present hazardous situations to the user. The cable must have certain technical characteristics depending, for example, on the length you need or the volts it must provide. The product manual contains the rules to follow. Our instruction manuals
