Floating Stainless Steel Balls are a critical safety component used in vacuum excavator spoil tanks. Designed to automatically shut off airflow when liquid levels become too high, they help protect the vacuum blower from damage while ensuring safe and efficient operation.
At No Dig Equipment, we supply high-quality floating stainless steel balls for vacuum excavation systems throughout Australia. Manufactured for durability and corrosion resistance, they provide reliable performance in demanding civil, mining and utility applications.
Available in multiple sizes, our float balls are suitable for a wide range of vacuum excavation systems and replacement applications.

Our floating stainless steel balls are available in two standard sizes:
| Ball Diameter | Suitable Vacuum System |
|---|---|
| Ø100 mm | 3″ Vacuum Systems |
| Ø150 mm | 4″ Vacuum Systems |
If you require a different size or replacement component, contact our team for assistance.
Floating Stainless Steel Balls used for fluid shutoff float valve and vacuum excavation spoil tanks. Available in 2 sizes Ø100 and Ø150 for 3″ and 4″ Vacuum Systems.


| GENERAL DIMENSIONS | ||
| Ø | 100 | 150 |
| gr ~ | 200 | 430 |
A reliable float ball plays an important role in protecting your vacuum excavation equipment and reducing costly repairs.
✔ Heavy-duty stainless steel construction
✔ Corrosion-resistant for long service life
✔ Protects the vacuum blower from liquid ingestion
✔ Reliable automatic fluid shut-off
✔ Designed for vacuum excavation spoil tanks
✔ Suitable for demanding Australian conditions
✔ Genuine replacement parts available
A floating stainless steel ball is used inside the spoil tank of a vacuum excavator as part of the float valve shut-off system.
As the liquid level inside the tank rises, the stainless steel ball floats upward until it seals against the valve opening. This automatically stops airflow to the vacuum system, preventing liquid and debris from entering the vacuum blower and helping protect expensive equipment from damage. Similar float-ball shutoff systems are widely used across hydro excavation equipment for vacuum protection.
With over 25 years of experience supplying trenchless technology equipment across Australia, No Dig Equipment is trusted by contractors working in civil construction, mining, utilities and infrastructure.
When you choose No Dig Equipment, you benefit from:
Our floating stainless steel balls are commonly used for:
The float valve system is one of the most important safety features on a vacuum excavator. Without a functioning float ball, liquid can be drawn into the vacuum blower, leading to expensive repairs and unnecessary downtime.
Our stainless steel float balls help:
Replacing worn or damaged float balls as part of regular maintenance helps keep your vacuum excavation system operating efficiently.
No Dig Equipment has been manufacturing and supplying trenchless technology equipment for over 25 years. Our floating stainless steel balls are manufactured using quality materials to withstand the harsh operating conditions experienced across Australia’s civil construction, mining and utility industries.
Whether you’re servicing an existing vacuum excavator or replacing worn components, we can help you find the right part for your machine.
A floating stainless steel ball automatically shuts off airflow when the spoil tank reaches its maximum liquid level, protecting the vacuum blower from water and debris damage.
The float ball prevents liquid from entering the vacuum blower. This reduces the risk of costly repairs, improves machine reliability and helps extend the life of your vacuum excavation equipment.
Our standard floating stainless steel balls are available in Ø100 mm for 3″ vacuum systems and Ø150 mm for 4″ vacuum systems.
Yes. Our floating stainless steel balls are ideal replacement parts for worn or damaged float valve systems used on vacuum excavators and hydro excavation equipment.
Looking for Floating Stainless Steel Balls for your vacuum excavator?
Our experienced team can help you choose the correct size for your machine and provide expert advice on replacement parts.