In industries that rely heavily on liquid storage—such as mining, construction, and rail—tank overfill incidents can result in hazardous spills, damage to equipment, and increased operational risks. Proper tank overfill protection mechanisms are critical in preventing such incidents, ensuring both environmental safety and equipment longevity. Banlaw offers a range of reliable solutions that cater to these needs.
The Dangers of Overfilling Tanks
Tank overfilling happens when the liquid inside a tank exceeds its capacity, leading to dangerous spills, leaks, and even potential explosions. Overfilling diesel tanks, for instance, can result in flammable vapours being released, significantly increasing the risk of fires.

Moreover, pressure build-up within a tank can lead to metal fatigue or even rupture. A well-maintained overfill protection system helps avoid such costly and dangerous outcomes by ensuring that tanks are filled to optimal levels without exceeding capacity.
Mechanical vs. Electronic Protection Systems
Banlaw provides two main types of overfill protection mechanisms: mechanical and electronic systems. Both offer distinct advantages depending on your needs.
- Mechanical Systems (FillSafe Zero): These systems use fuel pressure to control a valve, automatically shutting off the refuelling process when the tank reaches its full capacity. These are highly efficient and cost-effective, making them ideal for diesel tanks in mobile and small to medium storage units. Mechanical systems are simpler to install, requiring no external power source
- Electronic Systems (FillSafe Power): For operations where maximised flow rates and safety are paramount, electronic systems are more suitable. These systems rely on sensors and electronic controllers to prevent overfilling. They can handle a broader range of fluids and flow rates, offering real-time feedback to operators through visual cues like LEDs. Electronic systems also come with advanced safety features, such as fire-safe valves, adding an extra layer of protection in critical applications
Key Benefits of Overfill Protection Systems
Installing overfill protection systems not only reduces safety risks but also brings operational efficiency. Key benefits include:
- Increased Safety: Prevents spills, leaks, and the risk of fires.
- Environmental Protection: Reduces pollution risks associated with fuel spills.
- Cost Savings: Minimises downtime and equipment damage, avoiding unplanned maintenance costs.
- Efficiency: Enables faster and safer refuelling processes, improving overall productivity

Choosing the Right Solution
Selecting the correct tank overfill protection solution depends on factors such as the type of fluid being stored, tank size, and operational needs. For example, mechanical systems like FillSafe Zero are ideal for diesel applications, while FillSafe Power’s electronic solutions offer versatility across various liquid types and flow rates
Fast Fills, No Spills—A Safer, Smarter Future
Investing in an overfill protection system not only enhances safety but also optimises your operations. With Banlaw’s tailored mechanical and electronic solutions, you can ensure that your tanks are filled efficiently and safely—every time.
Take action today!
Contact Banlaw for a comprehensive overfill protection solution that meets your operational needs.