One type of device that can be purchased and installed to regulate the level of liquid in a tank is mechanical float valves for a container or tank. They perform the function of shut-off and control valves, controlling the flow of water entering the tank. Operating in automatic mode, these devices, simple in design, reliably ensure the specified mode of filling the container with water.
Operating principle, advantages
When the liquid level drops, the float lowers and opens through the arm of the lever. stop valve. If the level has reached a certain value, the floating float closes the valve in the same way, completely blocking the flow of water at the inlet to the tank. Sensitive element automatic device is the float. It usually has a thin-walled, hollow structure made of brass or stainless steel, cylindrical (spherical) in shape, filled with air.
There are two common designs of float valves, differing in the design of the lever mechanism: straight and angular. Their operating principle is the same, the difference lies in the shape of the lever and the location of the valve stem (horizontal, vertical).
Buy float valves for tanks with delivery throughout Moscow and all of Russia, taking advantage of the offer from our online store.
Float valve for tank– what is it and what does it serve? This is a device through which the water level in the tank is controlled. What is good about this device is that for its operation it is absolutely not necessary for a person to control all processes. This device is automated, so it does all the work itself.
What happens if you don't install it?
Well, first of all, this will ensure that water is poured out of the tank as soon as its level rises above the critical point. Therefore, it is precisely this device that will control the amount of water in the container. As soon as there is enough water that it reaches the control line, the valve shuts off further water supply. As soon as the water is drained, after a while it rises again to the highest level.
Where can you see such equipment?
Basically, they can be installed either in some kind of container, or in wells, or various tanks. This type of equipment is quite important for both drainage and the water supply process. And valves are also used for pumping stations, heating, industrial, etc.
There are two types of valves:
- Mechanical type. Absolutely simple design, reliability and resistance to aggressive environments, long service life.
- Electric type. Ensuring process automation (there is no need for human control of the entire work process). The product has a more complex structure than the mechanical type.
Another point is silent operation. Yes, valves of this type do not produce excessive noise during operation. Also due to the fact that the products are considered sustainable different types impact, their work is quite high quality. 
How the product works
What is it worth for? As soon as the water leaves, being at the lowest point, the valve lowers along with the water, thus opening the flow of water. When the water rises to a high level, the float also rises with the water level, and at the same time the liquid supply is blocked. Thus, water does not accumulate above the required level.
A float valve is also worth buying due to the fact that it is of high quality. The product is made from durable materials, which ensures its ideal operation. The valves have good level tightness.
How to choose a float valve
Don't know which valve to order? Don't have enough information about products? Our consultants can provide you with informational assistance. Here you will learn absolutely everything that interests you. Here you can place an order for products with delivery to your business or home.
A float valve is a device that allows you to regulate the liquid level in a container. Despite the simplicity of design, the devices are reliable tools, ensuring the flow and maintenance of water at a certain level in the tank. Their use allows you to automate the process of filling the tank and regulating a given volume of liquid.
Purpose and principle of operation
When water, oil or fuel mixture is consumed the float goes down, in this case there is a downward thrust, and the lever stops pressing on the piston. This in turn leads to the stop cap. Under water pressure, the piston moves back and liquid flows into the reservoir until the pressure is restored.
Using the device, the following goals are achieved:
- Maintaining a given water level between the upper and lower limits.
- Maintaining a constant specified volume of liquid in the container.
The modern models produced are high-quality and silent, regardless of the scope of application - at home or for professional needs.
Valve modifications are different:
- designs with flexible adjustment of the required level;
- models for foam surfaces;
- devices for containers with stirring;
- steel.
The last type is necessary when working with increased hygiene conditions or in hostile environments. At the same time, it is undemanding to control, operates stably, is easy to clean and has a well-thought-out design with different connection methods.
Kinds
There are two main types of products:
- mechanical;
- electric.
A mechanical water valve is often used in everyday life, for example, it is a float in a toilet flush tank.
The second type performs the functions of a signaling device and is used to turn electric pumps on or off when the level of the liquid medium changes. It is optimal to use it for frequent consumption in a small container. Float valve for water tanks can be used together with solenoid valve, providing auto mode pump and protecting it from operation when idling without water.
Features of choosing a device
The float design provides different ways settings:
- Inside in container
- Outside on the container
- Inside the pipeline.
In this case, the valves can close or open when decreasing water level or other liquid medium in a container.
The choice of valve is determined by three parameters:
- pressure drop;
- flow based on maximum level;
- ambient temperature.
Possible mechanism malfunctions
Despite the simplicity of the device, breakdowns of individual components of the mechanism are possible. Evidence of a malfunction is that:
- Liquid stops flowing into the tank.
- The liquid flows, but it does not stop, which leads to overflow.
- Liquid flows, but extremely slowly.
All these signals indicate that the membrane has failed or the water inlet valve is clogged.
It is also possible that the seal of the amendment itself is broken, and water is poured inside, preventing it from floating to the surface. In this case, repairing the mechanism does not make sense and the entire structure must be replaced.
Use in everyday life
A float valve for the water level in a tank for irrigation or an outdoor shower in the country has become widespread. The simplest design connects to a barrel for collecting rainwater and is connected with a hose that drains excess into a drainage ditch. When filling the barrel, in order to avoid overflow, the float blocks access to the barrel, and excess water is removed from the house.
In fecal and sludge pumps, the presence of a float allows owners to free themselves from constant monitoring of the level of wastewater in septic tanks and drainage wells. When a certain waste limit is reached, the float turns on the pump and liquid is removed for further purification naturally in the filtration field.
In this case, special attention should be paid correct installation pump Since the float is located outside the device, when immersed in a drainage well or septic tank, you need to carefully check that the lever does not catch on the walls of the container and can move freely. Otherwise, the float valve in the container or tank will not be able to regulate the level Wastewater, which will lead to rapid failure of pump parts or burnout.
Instruments with float valves should not be used in sub-zero temperatures as frozen liquid will cause damage. To avoid this, you need to either install heating in the room where the container is located, or drain the tank and the float valve itself so as not to damage the plastic parts and the membrane.
The level float valve allows you to solve the following problems:
- maintaining the specified upper and lower water limits;
- prevent overflow or lack of fluid.
A float valve should be selected for a specific location depending on design features and the material from which it is made.
Device
The main advantage of a float valve for a container or tank is its independence from electricity.Its design is quite simple, which allows you to install it yourself, without resorting to the services of specialists.
The float valve for the container is constructed from the following parts:
- float - a floating part that responds to changes in the amount of liquid;
- movable lever;
- a passage unit, which includes inlet and outlet pipes of various diameters.
The device is made of durable, strong and corrosion-resistant materials.
If installation will be carried out in a reservoir with clean drinking water, then you should choose a product from materials approved for contact with food.
In specialized stores you can purchase a float valve made of plastic, brass, stainless steel, and bronze.
Floats vary in shape. They can be spherical, cylindrical or flat. Made from materials such as plastic and stainless steel.
Most common plastic products. Some manufacturers supply the water level float valve without it, offering to purchase it separately, choosing the most suitable option in terms of size and material.
For example, a float valve is made entirely of plastic. The float of this model is adjustable. There is an external threaded connection pipe.
Among the advantages we can highlight good throughput, small dimensions allowing it to be mounted in small tanks. The seat has a soft seal, which ensures tight closure, even with constant changes in pressure in the supply line.
The lever used in the design is two-knee. Due to this, the closing force of the mechanism increases as the amount of liquid increases. There are models with a parallel float stroke, so they do not have guides.
On some models the seat and piston are replaceable.
The float valve for the tank has different degrees of opening and closing, which prevents the valve from opening when the water in the tank decreases slightly, the so-called “bell” mode.
Float valves for installation in a container can be equipped with an adapter fitting, which is used to connect a rubber hose to the outlet.
The float valve for a container or tank is supplied complete with rubber seals and a clamping nut for mounting on the outside of the tank.
Additionally, there may be a replaceable mesh filter installed in the inlet. It prevents the passage of polluting particles.
The mesh can be coarse or finer. It can be easily removed and washed. You should not use the device without a filter mesh, otherwise large particles may get into the internal mechanism and damage it.
There is a float shut-off valve in which there are two options for installing the float: vertically and horizontally.
Dimensions of float valves
Application
Float valves for internal installation in a tank are used:- in open tanks intended, for example, for irrigation;
- in closed containers, for example, toilet cisterns;
- in filling systems storage tanks water supply systems;
- in industrial and commercial equipment.
- installation location, that is, type of tank;
- water temperature;
- fill volume;
- at what capacity will the water intake be carried out?
At high blood pressure It is rational to use a float valve for the water level in the tank with a balanced piston device. Then the pressure in the system is balanced and does not prevent the float from ascending. If the pressure is weak, then with an incorrectly selected device, filling will occur very slowly.
It is also necessary to take into account the pressure in the container. Cylindrical floats are not suitable for closed pressure vessels. Special designs of locking mechanisms are designed for them.
Based on these data, a float valve is selected for a tank of suitable diameter, size and design.
The plastic float valve is allowed to be used where it will not be exposed to temperatures above 50 °C.
For steel products, the operating temperature is higher and equal to 90 °C. Largest and smallest operating pressure different for different modifications.
For example, the Aquatek float valve has values of this parameter of 6 bar and 0.6 bar, respectively.
The level float valve is inserted into the wall hole, which must have the appropriate diameter.
Installation is carried out as follows:
- In the place of the tank where the supply pipe will be located, a hole of the required diameter is made.
- A rubber gasket (included in the kit) is threaded onto the threaded pipe, and with its help a sealed connection is created.
- Then a fitting is placed inside the tank into the drilled socket and secured on the other side with a crimp nut. You should not tighten it too much, otherwise you can deform the fitting and ruin the thread.
- Next, the supply pipeline is connected. Suitable fittings are used for this purpose.
- The float valve is set to the maximum water level. Adjustment is carried out by screwing or loosening the nut on the movable lever.
- The correct operation of the device is now checked. To do this, open the tap installed on the supply pipe, and the tank will begin to fill. As the water level rises, the float will move upward. When it reaches the upper adjusted limit, the outlet pipe will block and the tank will stop filling.
Can be used for
