Liquid Filling Machine Parts

A filling machine is an assembly of various parts and components. A single liquid filling machine may have hundreds of parts assembled for an efficient filling process.

Usually, the number of parts varies depending on the machine’s design and configurations.

What is a Liquid Filler?

Liquid filler is a special machine that fills different containers with liquid or semi-liquid substances. Liquid fillers can be used in the food and beverage industries, pharmaceuticals, and chemicals sector.

These machines come in different configurations. You can learn more about different types of filling machines.

Parts of Liquid Filling Machine

Parts of Liquid Filling Machine
Parts of Liquid Filling Machine

Conveyor Belt

Conveyor carries containers throughout the entire filling process. Depending on the size of your machine, conveyor systems come in different sizes of dimensions. Usually, you can vary the speed of the conveyor belt system.

Feeding Mechanism

At times, the word feeding mechanism can be a little ambiguous. However, it refers to a series of parts or components that help feed either the container or filling liquid.

In most cases, you will place a container on the feeding table. From here, the feeding mechanism will move the containers into the conveyor system for the filling process.

The simplicity or complexity of feeding mechanisms will depend on the machine design. For instance, you may have:

  • Rotating turntable feeding system
  • Motor driving mechanism that helps to feed containers in the conveyor belt system

Filling Nozzle

Liquid Filler Nozzle Head
Liquid Filler Nozzle Head

Once the containers reach the feeding station, the filling nozzle directs liquid into the containers. That is, the nozzles control the direction of the flow of liquids into the containers ensuring accurate filling.

The filling nozzles come in different configurations depending on the type of liquid and machine’s design. For instance, your filling nozzle may feature:

  • Single-head liquid filling
  • Twin head filling mechanism
  • Rotary liquid filling head
  • Volumetric filling
  • Liquid level filling
  • Net-weight filling, etc.

In most liquid fillers, you will find three common nozzles:

  • Straight through nozzle – simplest design that nozzle for liquid filling
  • Purge nozzle – it can remove air before and after filling a container
  • Overflow nozzle – usually, these nozzles fill containers to a consistent level

Pump System

Peristaltic pumps transport and distribute liquids with essential accuracy, especially in pharmaceutical industries. Apart from peristaltic pumps filling machines may have piston pumps or servo-driven pumps.

Container Platform

Whenever you are filling containers, they should be on a flat platform for filling. These container platforms come in many designs depending on the machine design.


It rotates ensuring each container passes through all the desired filling stations and also offers a platform for filling nozzles

Capping Mechanism

After filling containers with liquids, sealing is critical to ensure the content is safe and free from any contamination.

Capping ensures proper sealing of the containers to avoid any possible leakage or contamination. There are many capping mechanisms which include:

  • Screw caps
  • ROPP caps or,
  • Crown caps

PLC Control System

From the PLC system, you can control all parameters and change setting of your machine depending on the liquid filling requirements. For instance, you can control filling volume and level.

Besides, you can control filling speed and program other data for liquid fillers. At the same time, you can monitor various filling processes and store data regarding the machine operations.

Valve System

Valve controls the flow of liquids during the filling process. For instance, they help to control overflowing during the container filling process. This ensures there is no unnecessary wastage.


Sensors observe and keep track of the filling process to ensure precise filling of the containers. Usually, the sensor systems are fully integrated with the PLC system for a smooth and efficient liquid-filling process.


Also called a product container, it keeps the liquid to be distributed to the containers ensuring a continuous supply.

Parts of Liquid Filler
Parts of Liquid Filler


The liquid filling machine consists of various parts such as a container platform, turntable, capping mechanism, peristaltic pump, filling nozzle, and PLC control screen. These parts perform different functions enabling automation of the liquid filling process and this ensures the accuracy and efficiency of the machine in industries.

More Resources:

Considerations when Buying Liquid Filling Machine – Source: LOM

How Liquid Filling Machine Works – Source: LOM

Applications of Liquid Filling Machine – Source: LOM

How to Choose the Right Liquid Filling Machine – Source: LOM

Filling Machines – Source: WIKIPEDIA

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