Ball check valve: essential for reliable wastewater discharge

Ball check valves are a crucial component of wastewater pumping systems and pipelines. A ball check valve prevents backflow and protects pumps from pressure differential damage and water hammer. At DWTN we understand the importance of high-quality ball check valves, especially for large industrial and infrastructure projects. Where other suppliers are limited to standard sizes, DWTN offers a unique range of valves up to 180 kg, suitable for the heaviest applications.

The choice of the right ball check valve depends on several factors, such as pressure in the line, pump capacity and the presence of aggressive media. In this article we discuss the operation, main features and why DWTN is the ideal partner for large-format ball check valves.

What is a ball check valve and how does it work?

A ball check valve regulates the flow of fluids in pumping systems and prevents water from flowing back when the pump stops working. This is done by a ball that moves freely in the chamber and automatically adjusts to the pressure in the pipe.

When the pump is active, the ball is pushed forward, allowing the water to pass through unhindered. When the pump capacity is not strong enough or the pump stops, the ball automatically closes the seat, preventing backflow. This mechanism protects the system and prevents unwanted damage.

At DWTN we offer ball check valves in DN 32 up to and including DN 300, made of nodular cast iron with epoxy coating on the inside and outside, making them resistant to aggressive media and giving them a long service life.

The main features of ball check valves

When choosing the right ball check valve it is essential to consider the materials, dimensions and functionality. The ball in the valve plays a crucial role and can be made of polyurethane, NBR or other wear-resistant materials, depending on the application.

• Self-cleaning mechanism: Our ball check valves are self-cleaning because the ball rotates during use, which prevents impurities on the ball and extends its lifespan.
• Minimal maintenance: Ball check valves are often installed in pumping stations that are rarely accessed, which means they must be designed for low maintenance and maximum reliability.
• Suitable for extreme applications: At DWTN we offer ball check valves that can discharge waste water up to 70°C and have a weight of up to 180 kg, suitable for large industrial projects.
• Option for different ball weights: When different ball weights are required to avoid noise and water hammer, a heavier ball can be selected to avoid water hammer and ensure smooth operation.

These features distinguish DWTN ball check valves from standard models on the market.

Why choose cast iron ball check valves?

Ball check valves are available in ductile iron, a material that offers exceptional strength and durability. This type of cast iron can withstand high pressures and mechanical loads, making it ideal for heavy-duty industrial applications.

At DWTN we offer ball check valves in ductile iron with epoxy coating, which provides extra protection against corrosion and aggressive media. Thanks to the smooth inner wall, impurities stick less quickly to the surface, which prevents blockages and increases efficiency.

In addition, we offer polyurethane balls, which are more resistant to extreme conditions and produce less noise than standard NBR options.

How to choose the right ball check valve for your application?

The choice of the right ball check valve depends on several factors:

1. Pipe diameter and pressure: The valves at DWTN are available in DN 32-300 and can be selected based on the specific requirements of your system.
2. Ball Type and Material: Polyurethane balls are available for heavy-duty applications, while NBR coated balls are suitable for less aggressive fluids.
3. Environment and medium: Aggressive media require a valve with an extra durable coating and a ball that is resistant to chemical influences.
4. Noise and water hammer: Preventing noise and water hammer is an important aspect when selecting a ball check valve. If water hammer occurs, a heavier ball is recommended.

At DWTN we are happy to help you select the right valve, whether it concerns a valve of 2 kg or 180 kg.

Order your ball check valve from DWTN

At DWTN we supply the widest range of ball check valves, suitable for applications ranging from standard installations to large scale industrial projects. Our products are designed to withstand extreme conditions and meet the highest quality standards.

Do you need a ball check valve that can withstand high temperatures, heavy pressures and aggressive media? Contact us and discover our wide selection of ball check valves, specially designed for the most demanding applications!