
A fuel tank breather filter is a valve apparatus that is connected to a fuel tank vent, allowing the tank to 'breathe'. It enables the optimum intake and expulsion of air as fuel levels in the tank change. The breather filter also prevents contaminants, such as water and dirt, from entering the tank and keeps the fuel clean. This reduces maintenance costs and extends the lifespan of the system. Fuel tank breathers are commonly used in diesel fuel tanks and are designed to accommodate different flow rates and levels of filtration.
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What You'll Learn
- A fuel tank breather filter is a valve apparatus that allows a tank to 'breathe'
- It enables the optimum intake and expulsion of air as fuel is released from or deposited into the tank
- It prevents tank pressurisation and the formation of a vacuum
- It filters incoming air, contributing to fuel cleanliness and reducing contaminants
- It protects fluids from moisture and particulate contamination

A fuel tank breather filter is a valve apparatus that allows a tank to 'breathe'
A fuel tank breather filter is a valve apparatus that allows a tank to "breathe". It is connected to a fuel tank vent, enabling the tank to take in air as fuel is released and expel air as fuel is deposited or expands within the tank. This process prevents tank pressurisation and vacuum.
Fuel tank breathers are designed to clean and protect fluids from moisture and particulate contamination as they are added to storage tanks. They disperse air and moisture from the system as fluid levels change and filter new incoming air. This helps to trap air particles before they enter a tank, keeping the oil clean and reducing the buildup of contaminants, which lowers maintenance costs and extends the lifespan of the system.
Diesel fuel tank breathers may also filter incoming air, contributing to fuel cleanliness. Fine-filtered remote fuel tank breathers can allow for high refuelling rates, fluid dispensing rates, and only filter incoming air to maximise the working life and efficacy of filters.
The IPU Vent TRAP breather removes moisture from incoming air and, during the exhale cycle, passes dry air through the vent trap, purging moisture from the filter. This product is designed to reduce the risk of water entering your tank and remove up to 97% of water from moist air as it enters.
Banlaw's Remote Tank Breather prevents damaging airborne contaminants from entering fuel tanks and other fluid storages. It is unique in that it vents and filters incoming air at 1,000lpm, making it perfect for service truck bulk storages and other tanks where incoming air needs to be filtered at a high rate due to service fluids or diesel being rapidly dispensed.
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It enables the optimum intake and expulsion of air as fuel is released from or deposited into the tank
A fuel tank breather filter is a valve apparatus that connects to a fuel tank vent, allowing the tank to "breathe". It enables the tank to achieve the optimum intake and expulsion of air as fuel levels fluctuate, ensuring smooth operation and maintaining fuel cleanliness.
The breather filter ensures that as fuel is released from the tank, an adequate amount of air is drawn in to avoid creating a vacuum. This air intake is optimised to match the rate of fuel consumption or dispensing, preventing any pressure changes within the tank. Similarly, when fuel is deposited into the tank or expands within it, the breather filter facilitates the expulsion of air to avoid tank pressurisation.
By regulating air exchange, the breather filter plays a crucial role in maintaining the appropriate pressure levels inside the fuel tank. This pressure regulation is essential to ensure safe and efficient fuel release and deposition. Without this mechanism, pressure fluctuations could occur, leading to potential issues with fuel flow and even compromising the structural integrity of the tank.
Additionally, some fuel tank breather filters are designed to filter the incoming air. This feature further contributes to maintaining fuel cleanliness by trapping air particles and preventing them from entering the tank. By doing so, the breather filter reduces the buildup of contaminants, thereby lowering maintenance costs and extending the lifespan of the fuel system.
The design of fuel tank breather filters can vary, with different manufacturers offering breathers with varying flow rate capacities, mechanisms of action, and filtration levels. It is important to select a breather that is appropriately matched to the fuel tank and its specific requirements to ensure optimal performance and safety.
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It prevents tank pressurisation and the formation of a vacuum
A fuel tank breather filter is a valve apparatus that is connected to a fuel tank vent, allowing the tank to 'breathe'. It enables the intake and expulsion of air as fuel levels in the tank change. This is important as it prevents tank pressurisation and the formation of a vacuum.
Tank breathers ensure that air and moisture are dispersed from the system as fuel levels change, and new air entering the system is filtered. They trap air particles before they enter a tank, keeping the fuel clean and reducing the buildup of contaminants. This is particularly important as it extends the working lifespan of the system.
The prevention of tank pressurisation is achieved by exhausting air at the maximum rate that fuel is deposited into the tank. This is a crucial function as it ensures the safe operation of the fuel tank. By matching the rate of air exhaustion with the rate of fuel deposition, the tank breather avoids a dangerous buildup of pressure.
Similarly, the formation of a vacuum is prevented by drawing air into the fuel tank at the maximum rate that fuel is consumed or dispensed. This maintains a balanced pressure within the tank, avoiding the creation of a vacuum.
Some tank breathers, such as the Vent TRAP, are specifically designed to remove moisture from incoming air, further reducing the risk of water entering the tank and causing contamination. This is an important feature as water is a key ingredient in the formation of diesel bug, which can cause issues in fuel tanks.
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It filters incoming air, contributing to fuel cleanliness and reducing contaminants
A fuel tank breather is a valve apparatus that is connected to a fuel tank vent, allowing the tank to 'breathe'. It enables the intake of air as fuel is released from the tank and the expulsion of air as fuel is deposited into the tank.
Some fuel tank breathers also filter incoming air, which contributes to fuel cleanliness and reduces contaminants. Filtering incoming air helps to maximise the working life and efficacy of the filters. This is achieved by trapping air particles before they enter the tank, ensuring the fuel remains clean. Fine-filtered remote fuel tank breathers, for example, can allow for very high refuelling rates and fluid-dispensing rates.
The Vent Trap Tank Breather is a device that can be fitted to a fuel tank to reduce the risk of water entering the tank. It removes moisture from incoming air and can eliminate up to 97% of water from moist air as it enters. This helps to avoid fuel contamination and extends the working lifespan of the system.
Tank breathers are compatible with most synthetic oils, diesel, and other synthetic oils. They are often mounted on the top of a nozzle opening of a storage tank, replacing the standard dust cap.
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It protects fluids from moisture and particulate contamination
A fuel tank breather filter is a valve apparatus that is connected to a fuel tank vent, allowing the tank to 'breathe'. It enables the intake and expulsion of air as fuel levels in the tank change. One of its critical functions is protecting fluids from moisture and particulate contamination.
Breathers are mounted on the top of a nozzle opening of a storage tank, replacing the standard dust cap. They are designed to trap air particles before they enter the tank, ensuring the fluid inside, such as diesel or oil, remains clean and free from contaminants. This proactive filtration system reduces maintenance costs and extends the lifespan of the fluid.
The presence of water in fuel tanks is a significant concern as it can lead to the formation of diesel bug, which can cause operational issues and damage to the system. By installing a fuel tank breather, such as the Vent TRAP, moisture is removed from incoming air, with claims of up to 97% of water being eliminated as the air enters the tank. This moisture-blocking capability is a key advantage over standard desiccant filters.
Additionally, fuel tank breathers can incorporate fine-filtered mechanisms that maximise refuelling and fluid dispensing rates while only filtering the incoming air. This selective filtration approach helps maximise the working life and efficacy of the filters.
It is worth noting that fuel tank breathers come in various designs, catering to different flow rate capacities, mechanisms of action, and filtration levels. When selecting a fuel tank breather, it is crucial to consider these factors to ensure compatibility with the specific application and to achieve optimal performance.
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Frequently asked questions
A fuel tank breather filter is a valve apparatus that is connected to a fuel tank vent, which enables the tank to ‘breathe’. It allows for the optimum intake of air as fuel is released from the tank and the expulsion of air as fuel is deposited into the tank.
A fuel tank breather filter cleans and protects fluids from moisture and particulate contamination as they are added to storage tanks. It ensures that air and moisture are dispersed from the system as fluid levels change and that new air entering the system is filtered.
A fuel tank breather filter will trap air particles before they enter a tank, keeping the oil clean and reducing the buildup of contaminants. This will reduce maintenance costs over time and extend the working lifespan of the system.
A diesel fuel tank breather is a type of fuel tank breather filter that is compatible with diesel fuel. It enables the tank to breathe by allowing for the optimum intake and expulsion of air as fuel is released and deposited into the tank.











































