How To Adjust A Sump Pump Float- A Simple Guide For Everyone!

All equipment is inevitably degraded and damaged after a long time of use. Pump float is no exception. Usually, after only 1-2 years, problems will arise. In this article, we will tell you how to adjust a sump pump float.

One fine day you notice a sharp increase in your monthly water bill, or other parts are yellowed? What is the cause? Leaking the toilet, that’s for sure. But how did that happen? The reason for this situation is because the toilet float is broken.

If this is the case, what to do? The solution is to adjust the float inside the toilet bowl. But how to do that? You don’t have to worry. We will guide you on how to adjust the toilet fully, quickly, and effectively. Now, let’s take a closer look at this issue.

Below is the list of information in this article

  • Working principle of float pump
  • Types of float pumps
  • How to adjust a pump float
  • FAQs

Working Principle Of How To Adjust A Sump Pump Float

The flush-type toilet flushing system works with a straightforward principle. That is to use floats and gaskets to seal the water inlet when full and flush when necessary. But if you do not know, it will be difficult to imagine how to fix the toilet when flushing.

Although the mechanism is simple, it works very well and needs very high accuracy. Just a little damage to the seal or the indentation of the water cover hemisphere can lead to a water leak. Costing you money.

The water supply unit can be divided into three parts: the lock valve, the cylinder body, and the float.

  •  Lock valve: is a type of piston-like bicycle pump with a rubber gasket that helps to seal the hole of the water supply pipe when it is full. Move up to open the water and move down to lock the water. The float arm compresses the entire upper face.
  • Cylinder body: The part that allows water to enter has a hole to drain the water out. Help the float arm catch on the body with a hinge-shaped latch that can be moved up and down. A new type of float body will be the running track for the float to go up and down.
  • Water buoy: consists of around buoy or a flip boat to float on the water. And the float arm connects from the buoy to the cylinder body. It helps force the shutoff valve to close when the water lifts the float high enough.

The mechanism of action is as follows:

  • When the water in the water tank runs out, the float will sink under the weight of the buoy. At that time, the float arm will point up, causing the valve to freely go up over the drain hole on the cylinder body. Water from the supply line will pass through the drain hole on the cylinder body and enter the water tank.
  • The set of flushing water into the toilet includes a Column to drain excess water, a wiper handle, and a flush valve.

Working principle of automatic electric float

The pump is essentially a switch consisting of contacts operated through the physical structures involved in the change of the water level to be monitored. The water level change will affect the mechanical mechanisms to change the state of the contact from closed to open and vice versa.

Column for excess water drainage: Or it is the tall pillar that catches the entire flushing system into the toilet body. The pillar is almost as tall as the body of the water tank. The top is open so that when the water is higher than the pillar’s height, it will enter and drain down the toilet.

The lower part is the hole’s mouth to drain into the toilet, which is sealed by the flush valve.

Drain valve (Water drain cap): It is a cover that seals the drain hole below the pillar. The structure is in the form of a round cap, and the bottom is a hemisphere with a gasket to ensure the sealing of the outlet hole.

Handle An external knob connected to the drain valve by a plastic chain and a long rod handle.

In my experience, I go to repair a lot of toilets. We share the working mechanism of the water dispenser as follows:

You pull the outside wiper handle downwards. The force will be transmitted through the long rod and connecting wire. Pull up the drain valve (flush cover) to open the drain hole under the toilet seat.

Due to the hemispherical structure, when the water is still in the tank. The drain valve is like a float, floating and not closing until the water is empty. When the water is drained, the drain cap will return to the position to seal the outlet hole so that the water when entering will not be released to the outside.

If excess water is supplied, it will flow through the excess water drain on the body of the discharger to come out of the water tank

When flushing from the water tank, the water will flow into the “Ten tanks” through the small holes along the “Aqueduct” and the “spray.” The water rose and crossed the bend of the “Rabbit,” but the act of sucking the water had not yet occurred.

As more and more water overflows into the “tank,” the mass and velocity of the water flowing through the bend increase, it will push the air down as fast as a pump pipe, and at the same time create a membrane of water separating the horizontal seal, through the rabbit hole. This water film also prevents air from coming in from under the hole. This creates a vacuum region—initiation of water absorption ( siphoning phenomenon ).

As the water inside begins to accelerate, it gradually displaces the hose, displacing air.

When the rabbit’s tube is overwhelmed with water, the water absorption process takes place completely along the siphon pipe down to the cesspool with waste.

Working principle of hand floats

The water pump is designed to be completely watertight. The shell material is high-grade material that ensures the product will withstand harsh outdoor conditions. The service life is long, and the electrical safety is very high.

As soon as the water level in the tank reaches the lowest level, it no longer plugs the hole in the rabbit, and the air enters, the siphoning process stops.

If the water level in the tank does not recover in time, a small amount of aromatic gas will back up from the cellar. Why does a clogged toilet happen?

Put hard objects, large garbage, hair, … into the toilet, causing a lot of accumulation over time, eventually clogging the rabbit’s pipes, leading to clogged toilets.

Working principle of pedestal toilet:

Sanitary equipment or any other equipment, when you know and understand its structure and the operating principle, will help a lot in using, preserving, and maintaining the device.

Initially, when flushing from the water tank, the water will flow into the “tank” through the small holes along the “water bypass” and the “spray.” The water rose and crossed the bend of the “rabbit,” but the rabbit’s suction action did not occur.

As more and more water overflows into the “tank,” the mass and velocity of water flowing through the bend increase, it will push the air down as fast as a pump pipe, and at the same time create a water film separating the horizontal seal through the rabbit hole. This water film also prevents air from coming in from under the hole. This creates a vacuum region. The phenomenon of water absorption (the siphoning phenomenon) begins.

Types Of Float Pumps

Mechanical float

The float valve is a machine element to restrict the amount and keep a steady level of operation, water tank, or underwater lift (the tube that connects the battery pack to extracting energy). It includes a valve attached by a right media, fixed on the tip of the reservoir, to a solid sealing floating (thrower). The vapor is attached to the source water input.

The theory is that the free excess water is maintained. The float valve enables the stream of fluid to hit a default point. The floating rests with liquid at a fixed amount because of flooding and prevents drainage.

Float valve consists of 2 main parts: valve body and float ball

  • The valve body is made of copper or stainless steel depending on the use environment of the valve. The valve body consists of parts such as the valve shaft, the valve disc, and the crankshaft
  • The float ball is made of plastic or stainless steel and is connected to the valve body through the swingarm and crankshaft

When the water level is lower than required, the balloon floats down. The lever arm and crankshaft pull out the valve shaft and pull the valve disc out of the outlet blocking position, and the water is discharged into the tank. When the water level has reached the required level, the float ball rises through the crank arm and crankshaft mechanisms, pushing the valve disc to the position blocking the outlet, the water flow stops completely.

The hydraulic float valve is a line of mechanical float valves specialized for large pipelines with high pressure. Then the mechanical float is just an auxiliary part that helps create a pressure difference to help the fluid flow through, not directly participating in the opening and closing of the fluid. This valve stem is usually made of cast iron, and the mechanical float is separated and flanged. That’s why it’s also called flanged mechanical float valve van

Threaded mechanical float valve

It is a popular float valve line in many civil and industrial fields. Small size, easy to install. Valve ball is made from plastic or stainless steel.

In addition, there are other mechanical float valves such as

  • Mechanical float valve
  • Stainless steel mechanical float valve
  • Plastic mechanical float valve
  • Brass mechanical float valve
  • Pump mechanical float valve

The water valve will automatically open the inlet valve when the water level drops to the minimum level and automatically close when the water level reaches the limit, preventing water from overflowing out of the tank, causing no wasteful drainage. Smart mechanical float does not use electricity but uses automatic force, so it is also very safe not to cause fire and explosion, cause electric shock, and be safe for users even when you are not at home.

When the water level in the tank drops to less than 60mm, the magnet drops to open the connection between the water in and the water out. The water is supplied to the tank through a filter to retain dirt to avoid buckling the magnet. 

The size of the water in and out is phi 21 or phi 27, so the water supply speed is much faster than a normal mechanical float (Depending on the capacity of your tank and the speed of the water supply). After a certain period of time, the water level will rise, no matter how high the magnet will be, the magnet will gradually increase there, and when the water rises to 60 mm, the float will close completely.

Advantages of the new generation of smart mechanical floats

  • 100% sealed
  • The lifespan of more than 5 years
  • Withstands water pressure 10 times (10 bar) higher than traditional mechanical floats due to the use of magnetic force of the magnet to close the valve, so the opening and closing force of the valve is sensitive, closed, ensuring no water leakage.
  • Quick water supply with 2 water supply heads phi 21 and phi 27
  • Compact and easy to install, replace, and clean.
  • Fits all types of sinks such as toilets, recessed sinks, horizontal tubs.

All working mechanisms are located inside, protected through the shell, so it is not dusty.

Equipped with a stainless steel filter to filter dirt from the water source to protect household water-using equipment such as washing machines, water heaters.

It can be said that the mechanical float works quite well, but still suffers from conditions such as clogged filter (filtering dirt from the water to avoid jamming the float) or stuck in the float, so even with a 2-year warranty, the repairman Electricity and water rarely use this type. Even on the official Facebook page of the product, many customers complain about the product quality. According to the update, the manufacturer has recently upgraded to a new generation Float version, but the quality has not been clearly verified.

Electric float or electric float valve, water tank float, pump electric float, automatic water pump float, anti-spill electric float, anti-drainage electric float, water tank float, water float electrical switch, water level switch, anti-dry buoy …., with many different names but all have the same purpose of controlling the pump depending on the actual needs of the user.

Although they are instrumental and indispensable in every family, their proper installation and use ensure human safety has not been given due attention. Therefore, there have been many accidents related to electric water pump floats during use.

With the desire to limit the risk to the community, through this article, we want to share with you a solution and safe use in every family when using an electric float to pump water to the tank 

Cases of water tank mechanical damage 

  • Due to the junction positions, the joints on the bolts gradually do not stick together, causing damage.
  •  Because the shaft of the water lock float is loose, the lock valve of the mechanical float is open.
  •  Due to incorrect installation, the mechanical floats no longer work. For example, the mechanical floats must be installed so that the buoys must be in a vertical position.
  •  Due to the use of poor quality mechanical floats.


  • When detecting that the mechanical float is loose, damaged, inoperative…. then immediately re-zoned for temporary, preliminary remediation.
  • You should consider choosing a mechanical float with reputable materials and brands if possible.
  • Please regularly check to prevent your home’s mechanical float from being loose, damaged, or not working.

Electric float

Water is an indispensable part of human life. To have water for domestic use and serve other needs in life, we often use water tanks and pumps. However, turning on the pump to pump water to the tank when it is almost out of the water, then paying attention to the time, and turning off the pump to avoid overflowing the tank is a very time-consuming and challenging job.

We want the pump to operate automatically to free up time and human effort for a simple but important and repetitive daily task: When the water in the reservoir reaches the threshold, the pump must start automatically. The motor runs to pump water into the tank. When the water is almost full (to the threshold), the pump must turn off.

The above two things of the pump must be fully automatic, and we do not need to care about whether the pump runs or stops anymore. For the pump to run on its own and disconnect as required, we need to install an electric float to let the pump operate automatically.

Electric floats, also known by many other names, are electric float valves, water tank floats, pump electric floats, automatic water pump floats, anti-spill electric floats, anti-drying electric floats, water tank floats, water float electrical switches, water level switch, anti-dry buoy…, is a commonly used device to control the water pump automatically according to the needs of the user.

Electric floats have many types and are used for different purposes, such as controlling the water level in the storage tank, anti-drying for underground tanks, anti-overflow for overhead tanks, etc. Different types of electric floats are available on the market. Fields and are being used commonly as anti-drainage buoys and water float electrical switches.

The float is basically a switch with conductive contacts operated by mechanical devices involved in the change of the water level to be monitored. The water level change will affect the mechanical mechanisms and change the contact state of the solenoid float from closed to open or vice versa.

Electric floats are essential and useful, but they cannot avoid problems during long-term operation, resulting in interruption of daily water pumping, greatly affecting their lives. Ta.

If the fault causes the float to leak electricity from the float contacts or from the wire to the water tank, the user is at risk of electric shock using the direct connection to the electric float.

Locations of electrical wires that come into contact with stainless steel water tanks like this are hazardous. If the wires are rotten due to being exposed to the sun for a long time, it will cause electrical leakage to the water tank or other locations, especially when it rains.

If the user accidentally touches the phase wire or live parts (water tank, water tank holder, water pipe, faucet …), it is hazardous when the body has a part in contact with the ground. An electric current will flow. Body and can be life-threatening.

Does it depend on the resistance of the body part in contact with the live carrier and the ground contact resistance? Or does the path of the current pass through the heart? Dangerous to varying degrees.

The solution for automatic water pump buoys uses ELCB leakage-proof CB (also known as anti-shock automat) to connect to the electric float system to avoid electric leakage from the electric float or the conductor, causing electric shock accidents.

The working principle of the anti-shock automat is to compare the current between the two output wires to the load to act on the circuit breaker. Normally, the total current flowing through the 2 wires to the outgoing and returning loads is balanced.

 If there is an electric leakage from the hot phase to the ground, it will cause an imbalance of the outgoing and incoming currents, and the shockproof automatic works to disconnect the power. However, most anti-shock automat only disconnects when there is a current of about 30mA leaking to the ground.

Normally, if there is no leakage current, the output current of the shockproof automat to the load going from wire L through the load to wire N is balanced.

If there is a leakage current from L not to N, but a part goes to the ground, it will cause an imbalance. The current sensor coil will detect this difference. The electronic circuit in the anti-shock automat will control the impact to disconnect the output of the anti-shock automated, thereby disconnecting the power to the load and the leakage point.

However, a current of 30mA flowing through the body is enough to cause a feeling of electric shock for humans. Although not fatal, it can cause many other dangers when the person touching it is startled, body spasms, cardiac arrhythmias, and leads to falls and collisions.

Therefore, using only anti-shock apt in this case is not the optimal solution. To install electric floats for the safe operation of water tanks, shock prevention is sometimes more necessary than shock prevention. Both should be combined if the actual installation terrain is complicated or the conditions of use are harsh.

To completely solve the safety problem when using electric floats, it is necessary to use a solution to control the pump indirectly through an insulated intermediate relay between the control circuit and the driving circuit.

Then all the wires leading to the electric float, both in the overhead tank and the underground tank, carry only low voltage and are not capable of causing electric shock.

Therefore, during long-term use, if the electric float or the wiring system leading to the electric float fails or leaks, it will not cause danger to people and the structure.

To do this, an isolation transformer will be used to change the mains voltage from 220V to 12V or 24V with a small amperage.

This voltage is not dangerous to humans and is used as a signal to the electric floats and then back to control the suction coil of the intermediate relay supplying power to the pump.

How To Adjust A Pump Floats

Step 1 Identify your place

You need the GPU water cooling kit to make the water cooler before testing. Noise pollution listening. This may indicate wear or lack of lubricating oil. This is possible. In the information from various, get the portfolio is designed removed, while during the latter part add oil filter to the equipment and shift supports.

Step 2 Float shift mounting and weight adjustment.

If your engine doesn’t really operate and your engine doesn’t really spin, test the voltage level loop and fix any converter if possible. If the energy doesn’t seem to be an issue, check that there is a broken power chord or defective wires, all of which need to repair the defective components.

Step 3 Cable and identify your top point.

Make sure the switching frequency fits the software tag checklist if the engine overheats and shuts off. This could also mean wrong impedance and could be corrected by observing the software instructions given.

Step 4 Switch Float Drilling

If the flow rate doesn’t really spin, switch over or patch the indexed sheet, mostly owing to the damaged indexes tray. It would help if you suggested switching the roller mount, although it can become responsible for a naked pump performance roller mount.


What’s a floating turn for a pump?

Pump controls are programmed to monitor the fuel pump output. The setup is very straightforward if you buy a pressure transducer with a doggie rear strap. The connector on the control valve connects to an electrical socket, and then the motor connects to the rear of the boat.

How can a floating shift be connected with a pump?

The committee’s conductor provides access from the motor to the dc link. The board base wire is connected similarly to the motor cable. You now have an emergency response plan left out of the board and a hot filter cable. There are allow flexibility in the float turn.

How long is the sump pump supposed to run following rain?

In the fall, when the ice sometimes falls after torrential rain, it is common for the backwater valve. But it’s an exceptional scenario to operate “non stay 4 days long.”

Why is the pump running too often?

For several causes like system failure, high groundwater, and impact on water, swamp pumps may operate on an ongoing basis. One of the most frequent causes for a power outage is that the machine starts running in your house continually.

How much after wet weather does the sump pump operate?

Our sump pumping runs every 2 minutes after torrential rain and lasts approximately 3 days before it ceases.

How many times can I operate my pump?

After rain begins, there is a pause until the standing region gets enough liquid to operate the device. Then it works as well as it does for every 8 minutes. Just after precipitation ceases, the soil continues to emit liquid into the standing field.

Does my sump pump have to contain water?

In the tank, the liquid must not be too heavy. It ought to be up to around the within 2-3.” First, locate the pressure transducer, which you can activate when the liquid is too high 

Can I disconnect my pump?

It is all right that the sump pump should only be unplugged for a short time when you test this out or wash it. Thermal melting and a continuously working bottle pump are no legitimate reasons to disconnect your bottle. Finally, you should never disconnect your device longer than normal to find a solution.

Why are float switches not working?

If this form of the control valve is not effective, some likely reasons usually occur. These triggers include wrong communications services, poor maintenance, float switches not intended to be used, or a floating shift not correctly classified for use.

Hope that all the information FAQs above can help you know more about how to adjust float on sump pump

Watching this video for more detail


In general, adjusting the sump float is very simple. You can easily do it yourself at home. I hope our article has provided you with useful information. Now, do you know how to adjust a sump pump float? If you have any questions, please contact us for answers.

If during the adjustment process, electricity is lost, you can refer to our generators.

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