Toilet flush system types eliminate human waste out of the bowl through pressure from water that flushes it out through an outlet pipe to either the sewer or septic system. There are a variety of flushing toilets with different flushing mechanisms and styles.
The different types of flush systems include; gravity washdown flush, siphon jet flush, vacuum/pressure-assisted, double cyclone, rear toilet flush, dual flush system, single-flush, flapper-flush valve, and the tornado.
The most common flushing mechanisms comprise water-powered, water-powered gravity flush with water and the vacuum or compressed versions that use water and air.
Regarding design aspects, certain flush systems have tanks that have pushbuttons with dual or single handle/levers and trapways that are curved with skirted bowl base tower style flush system designs, some are equipped with small tanks, and some have big tanks, etc.
If you’re looking to purchase an updated flush toilet that is one that is easy to use and maintains a system that saves the environment and water is the one you ought to think about. Below, you can learn more about the different flush systems, how they function, and the advantages and disadvantages of each.
Types Of Toilet Flushing Systems
1. Ballcock Flush System

A ballcock flush toilet is one of the most widely flushes used around the world. Ballcocks are floating ball that is connected to the rod. The rod’s motion triggers the plunger. The plunger lets water flow inside or out of the tank to flow. The drawback to this system of flushing is that it is heavily dependent on the level of water.
2. Flapper-Flush Valve

The flush system is identical to a ballcock both in terms of operation and design. Its only distinguishing feature is that it’s the flapper rather than the ball.
When you pull the lever for flushing to flush, air enters the flapper, causing it to rise. This lets water flow out of the tank and into the bowl of your toilet.
If the water level inside the tank falls in the tank, the flapper won’t be capable of returning to its previous position. This lets the tank refill and prepare it to be ready for flushing. Improvements have been made, and updated models of flapper flushes are available. One of these is Dual flush technology.
3. Gravity Washdown Flush Toilet System

Washdown flush systems are among the most fundamental and oldest designs of all systems. The system makes use of the weight of the toilet and the gravity current from the water in order to force waste from the toilet bowl to the trapway.
The majority of flushing systems available on the marketplace present are improved or modified versions of this type of system.
The features of flushing systems for washdown toilets are:
- It has a push-button flush that initiates a flush instead of a lever flush.
- Skirted design
- A large waste pit because of the large trapway
- Trapway that is wide and short
- A smaller area of water surface
- Some washdown toilets are equipped with push-button dual flush, which can be used to become water efficient
How Does It Work
Washdown toilets use a simple mechanism. When you start your flush massive quantity of water flowing into the bowl force everything and everything to go down the drain.
4. Siphon Flush System (or Single Flush System)

This kind of toilet flushing system is popular across the US. It is able to increase the amount of water inside the toilet bowl fast after flushing it prior to taking it away. A sound of gurgling can be then heard. It happens after the vacuum seal has been damaged. The tank’s button causes this. The button will open the flush valve which allows water to enter the bowl of the toilet.
This is one of the most sought-after flushing methods in many homes in the present. It is essentially a modified version that uses gravity to wash down. Alongside the water’s gravitational flow it also has the trapway curved to create more pressure to flush.
One distinctive feature that distinguishes the siphonic flush is the trap that is designed in the shape of an S with one end connected with the system of sewerage, and another end to the bowl.
It also creates the rest of the tube that is filled with air.
The trap-way style creates an air gap with air, which helps trap waste material down drainpipes. It also stops gasses from escaping into the bathroom. The water in the lower part of a siphon serves as a valve that stops sewer gasses from exiting.
In addition to trapway siphonic jet, single flush toilets are also trap-way. large surface areas for water, as well as their levels, remain above the outlet of the bowl.
If you begin your flush with the push of a lever, the water is released through the tank to the bowl through gravity. The tank releases water at a greater speed than it exits the bowl. The bowl is filled with water through the siphon jet, and also through holes that are smaller in the bowl’s edge.
The bowl’s water initially rises, before it sinks quickly. When the water drains through the bowl it will displace the air using the trap method. The displacement creates an air vacuum that draws the waste away to drainpipes. The sound of gurgling indicates that the vacuum/siphon is damaged.
5. Dual Flush System

Dual flush systems are an improvement to gravity-powered systems. It is specifically designed to handle solid waste and liquid waste on a separate basis. There are two systems with two buttons. One for solids and one for liquids. Other systems have one button that you choose to press on either side based on the amount of waste.
The dual system functions by controlling the amount of water let in the bowl. The water needed for solids must be pushed through the trapway to ensure there is no blockage in the bowl. For liquids, just tiny amounts of water are required.
Full flushes, as used for solids, requires one gallon and a half of water whereas a partial flush for liquids will use less than one gallon.
6. Pressure Assisted Flush System

Contrary to most flush systems that only rely on gravity the pressure-assisted system makes use of the combination of pressure-driven, gravity-driven water as well as pressurized gas that creates an impressive flush. Because of its strong flush, it’s often used in commercial facilities.
They typically contain a pressure tank within the main tank which typically functions as a huge water balloon. In this tank, water is usually pumped into the tank, and it is held in place under pressure.
After flushing the toilet, the valve for flushing opens, and a rumbling rush occurs due to the pressure. This method uses less water, but it completes the flushing of the toilet.
Along with the strong flush, it’s also less susceptible to sweating and is the most suitable choice for commercial installations. On the contrary, it can be very noisy and expensive to purchase and install.
7. Class Five Flushing Technology System

A new technology developed by Kohler class five is an innovative flushing system that is designed to give you a truly impressive large-scale flushing. It is capable of removing up to 1100 grams of solid waste in one flush.
It has a huge (3.25) flush valve that permits rapid release of water all 360 degrees. It also has an air-fed direct jet. This increases the flow of water.
8. Rear Toilet Flush System

The rear toilet flush systems aren’t as popular as other flush systems, but they are typically utilized in areas with smaller space. This type of flush is typically utilized in places in which the toilet does not contain tanks. It is modern in appearance because the plumbing fixtures are hidden out of sight.
9. Double Cyclone Flush System

Introduced by Toto the double cyclone design has two nozzles, which are located on uppermost part of the bowl and facing to the sides. The nozzles are supported by a propulsion mechanism that lets more water move through the pipe. The nozzle also has a strong siphoning action to ensure an efficient flush.
When flushed, water swirls around the bowl, creating the shape of a cyclone. This is effective in cleaning as well as flushing the toilet. The cyclone occurs by the direction in the direction that water flows into the bowl. The flush system is comparable with gravity flush systems since it relies on gravity’s force.
10. Tornado Flush System

The flushing system described here is an upgraded model of the dual-cyclone system for flush. Instead of two nozzles, this has three powerful nozzles which create an elongated, cyclonic action, which helps reduce waste accumulation and also keeps the bowl clean.
It requires only 1.28 grams of water per flush. It is extremely efficient and strong flush. The shape of the rim assists in eliminating breeding grounds for bacteria.
Which Types Of Toilet Flush Are The Best?
The most effective toilet flushing system will depend on your preferences. It’s all about the features you require, what you need, and how the bathroom is designed. For instance, in the event that you don’t have the space to install the toilet, you’ll prefer the flushing system for the toilet in the rear. As long as the goal that the system of flushing toilets has been attained, which is to empty the tank contents out of the bathroom in order to get rid of waste. We recommend that you select a flush system that is strong and that can be refilled promptly.
A flapper flush valve toilet system for an instance requires a long period of recuperation time before refilling which can be a nightmare in a home with a large number of people and in a home that is crowded. A noisy toilet flush can be irritating to the ear, especially in toilet flush systems that are pressurized. We prefer gravity-forced toilet flush systems as they’re extremely efficient and do not produce noise.
Which is the Worst System?
The flushing system for washdowns is perhaps the most unpleasant flush system as it is too noisy and susceptible to smells due to the fact that wastes aren’t completely submerged in the water. Although modern flushdown models appear to conserve water, older models do not reduce water consumption. This can be costly.
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Final Thoughts
Understanding the toilet and the different types of flushing systems for toilets is crucial. This article will guide you through the various functions of each, as well as the disadvantages of each toilet flush system as well as how you can enhance your toilet flushing system. An important reminder is that we suggest you opt for the gravity flush system. It’s a highly efficient kind that flushes systems. It delivers the highest performance while not causing any noise.
Toilet Flush System Types FAQs
Which is better flush valve or gravity feed?
If you use your toilet, the tank lets water out into the bowl. The water is then absorbed by compressed air. This force is higher than gravity’s force. This means that you will get rid of more waste with just one flush.
What is a Class 5 flushing system?
This Class Five flushing system has been built to offer exceptional large-scale flushing. The large flush valve permits rapid release of water with a direct-fed jet, which maximizes water flow. The Ingenium features a quieter, swirling flush designed to limit the sound and also clean the bowl.