What is a liquid filling machine?
One of the liquid filling machines is the thin liquid filling machine , which is used to fill liquids with low density and viscosity. Today, all liquids that have high viscosity, such as water, rose water, fruit juice , soda, etc., are classified as dilute liquids. This machine is used to fill thin liquids into plastic, glass, and metal containers.
Importantly, this machine is designed and manufactured by Radan Machine in two models: automatic liquid filling machine and semi-automatic liquid filling machine. In the semi-automatic type, the operator places the bottle on the conveyor belt and the bottle filling continues automatically through the nozzle. But in the automatic type, there is no need for an operator and all work is done by the machine. Using a thin liquid filler increases the accuracy and speed of work and is very useful and practical for increasing factory performance.
How does a liquid filling machine work?
The operation of the liquid filling machine is very simple. The thin liquid tank is placed at the top of the machine and connected via fittings to the nozzle located below, allowing the liquid to flow downward until a specified amount is injected into the container or bottle. Inside the tank, sensors monitor the liquid level to prevent errors. This machine is also equipped with a channel to prevent foaming at the nozzles, which is suitable for liquids with foaming properties.
The advantages of using a liquid filling machine, besides increasing packaging speed, include preventing product waste and overflow. It ensures that filling occurs in a completely hygienic environment, free from contamination, and most importantly, it allows all containers to be filled uniformly and consistently.

Types of liquid filling machines
Thin liquid filling machines are available in various types and models, each designed for a specific liquid. Below, you can become familiar with their operating mechanisms.
Automatic Gravity Liquid Filling Machine
The automatic gravity liquid filling machine is considered one of the cheapest machines on the market. The gravity filling mechanism is generally used for thin liquids with low viscosity, and this process is based on the weight of the liquid and gravity. In this device, the tank level must be constant so that there is no error when filling the containers. The best option for thin liquids with simple operation is an automatic gravity liquid filling machine. Like the mineral water filling machine, the liquor filling machine, and the most widely used and practical gravity filler, the dough filling machine. The main problem with gravity filling machines is that they cannot fill containers of different sizes simultaneously. But at Radan Machine, you can minimize this problem with expert design. The features of this product are ease of cleaning and the device’s upgradeability.
Today, this machine is favored by developing companies that can use an automatic gravity liquid filling machine for liquids that do not have excess particles and are quite dilute. Including the liquids that are filled in these devices. The following can be mentioned:
Detergents: glass cleaner, degreaser, etc.
Solvents: thinner, acetone, etc.
Chemicals: antifreeze, acids, etc.
Edible liquid: buttermilk, water, vinegar, fruit juice, etc.

Automatic Pump Liquid Filling Machine
The automatic pump filling machine, also known as the timer filling machine, is used for various thin and semi-thick liquids. Its operation involves injecting the liquid into containers and bottles using a pump, making it suitable for viscous liquids such as grease that have high adhesion. However, the main drawback of this machine is that pumping reduces accuracy. On the other hand, its speed is higher than that of a piston cylinder machine, providing better performance. The type of pump used in this machine depends on the density and viscosity of the liquid. Pump fillers cannot be used for pulpy liquids; such liquids are suitable for piston cylinder machines.
This machine is a suitable option for packaging high-value liquids with a specific volume. A tank can be installed in this machine to fill containers and bottles at a higher speed. Here are some examples of liquids that can be filled using this machine.
Honey pump filling machine: Honey is a thick liquid that is transformed into a thin, fluid liquid in the machine due to heat, which facilitates the filling process.
Grease pump filling machine: This liquid also has a high viscosity and stickiness that cannot be easily injected into the container, and a pump is required to fill the containers so that it can be injected into the container with the pressure of the pump. The grease filling machine is also a pump type and is used for thin and thick liquids.
Applications of liquid filling machines
Liquid filling machines are widely used in various industries and factories, including food and chemical industries, and more. They are not limited to thin liquids but can also be used for high-viscosity liquids such as honey. Liquid filling machines are divided into two types: automatic and semi-automatic. Employers purchase the filling machine based on their needs and the production volume of their products. Liquid filling machines can be used both for small workshops with low production volumes and for factories with high production volumes, depending on the buyer’s production requirements. Below, we have listed industries that use liquid filling machines for thin liquids:
- Food industries: Water, vinegar, fruit juice, yogurt drink, and more.
- Chemical industries: Antifreeze, acid, hydrogen peroxide, and more.
- Cosmetic and hygiene industries: Alcohol, acetone, glass cleaner, and more.
- Agricultural industries: Various types of liquid pesticides and fertilizers.

Mechanism of operation of a liquid filling machine
Today, speed and accuracy in packaging are very important, and this is made possible through the advancement of industry and machinery, which helps increase efficiency in product packaging. The operation of a liquid filling machine involves three mechanisms: pump filling, gravity filling, and piston filling. Each of these machines is suitable for a specific type of liquid and does not work effectively for others. Choosing the appropriate machine mechanism for the liquid has a significant impact on increasing the productivity of the production line, which leads to improved quality and speed, prevents waste, and reduces costs. Therefore, careful selection of the machine is crucial. For thin liquids, it is better to use a gravity filling machine, which will lead to higher profitability for the factory.
Sales of liquid filling machines for thin liquids at Radan Machine
Due to the variety and technical specifications that customers require, the performance and price of liquid filling machines for thin liquids vary. For bulk and retail purchases, you can visit Radan Machine and, after consulting with technical experts, decide on the specifications of the machine you need and the basis on which it should be produced. The sale of liquid filling machines for thin liquids at Radan Machine is done in a completely specialized manner based on the customer’s request. By visiting the Radan Machine website, you can receive free guidance and consultation from expert professionals regarding the purchase and price inquiries for liquid filling machines.
Manufacturer and producer of liquid filling machines for thin liquids
The use of liquid filling machines for thin liquids leads to increased production and efficiency, and today, the application of this machine in factories has become a necessity as it ensures high quality and precision in packaging. Various types of liquid filling machines for thin liquids are manufactured at Radan Machine according to customer requests and can be single-nozzle, dual-nozzle, four-nozzle, or ten-nozzle. The design of these machines varies based on the product model, container used, and the amount of liquid to be dispensed. Radan Machine, as a manufacturer of liquid filling machines for thin liquids, designs and produces the machine according to the customer’s requirements and after consulting with experts.
Price of liquid filling machines for thin liquids from Radan Machine
The price of a liquid filling machine for thin liquids depends on its quality and the number of nozzles. The more options the machine has, the higher the price will be. However, it is not possible to set a fixed price for the machine. Based on your specific needs, paying for the machine not only proves to be cost-effective but also contributes to the growth of your work process and increases the speed of product packaging. If you are considering purchasing a liquid filling machine, our recommendation is Radan Machine. This reputable company designs and manufactures various machines, one of which is the highly popular liquid filling machine. By purchasing it from Radan Machine, you can achieve success in your field.