Ball float steam traps are among the most versatile and widely used designs in industrial steam systems. They operate continuously, discharging condensate as soon as it forms, regardless of load conditions. This makes them ideal for both light and heavy condensate applications, such as heat exchangers and process equipment. Their mechanical design ensures a constant water seal, preventing steam loss while maintaining stable temperatures and high heat transfer efficiency.

Key features and benefits of these Steam Traps.

Key Features

Ball float steam traps operate in real time, removing condensate the moment it forms. This prevents flooding in heat exchangers and process equipment, keeping heat transfer consistent and efficient.

Key Features

These traps perform reliably across both low and high condensate volumes without adjustment. This versatility makes them suitable for a wide range of industrial applications with varying process demands.

Key Features

The internal float mechanism maintains a constant water seal within the trap. This stops live steam from escaping while stabilising temperatures and protecting system efficiency.

Product Range

Spirax Sarco Ball Float Steam Traps are engineered for applications where condensate must be removed instantly and continuously, even under fluctuating loads. The range spans compact stainless steel units such as the FT46 for DN15–DN50 pipework, ideal for process plant, heat exchangers, and hygienic environments where corrosion resistance is essential. For heavier industrial duties, the FT44 carbon steel series provides robust performance across general steam systems, while the FT43 cast iron models cover DN25 through to DN100, making them the go-to choice for large condensate loads on plant mains and distribution lines.

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Ball Float Steam Traps Range

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Ball Float Steam Traps Range

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Ball Float Steam Traps Range

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Ball Float Steam Traps Range

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Ball Float Steam Traps Range

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Ball Float Steam Traps Range

The Spirax Sarco FT and FTC series of Ball Float Steam Traps are built for applications where continuous, high-volume condensate removal is critical. Models such as the FT47 (SG iron, DN15–DN50) and FT57 (SG iron, flanged) are ideal for heavy industrial services, offering exceptional durability in harsh environments. For larger flanged installations, the FT53 cast iron and FT54 carbon steel ranges provide robust performance on plant mains, heat exchangers, and process equipment where reliability is non-negotiable.

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Steam Traps Range

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Steam Traps Range

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Steam Traps Range

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Steam Traps Range

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Steam Traps Range

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Steam Traps Range

Industries

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Product Brochures

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Product Brochures

Spirax Sarco Ball Float Steam Traps are built for systems that demand instant, continuous drainage. By discharging condensate the moment it forms—regardless of load—they keep heat exchangers efficient, processes stable, and pipework protected from water hammer. It’s mechanical precision at its finest, delivering uninterrupted performance in the most demanding steam applications.

A ball float steam trap is a mechanical trap that uses a floating ball to open and close the discharge valve. It removes condensate continuously as it forms while preventing live steam from escaping.

As condensate enters the trap, the float rises and opens the valve to discharge it. When steam reaches the trap, the float drops and the valve closes, sealing the system.

They are commonly installed on heat exchangers, process vessels, steam heaters, and plant mains. These applications benefit from continuous condensate removal and stable temperatures.

Unlike cycling traps, ball float traps discharge condensate continuously. This prevents flooding, improves heat transfer, and keeps processes running at a consistent temperature.

Yes. They remove condensate instantly without wasting live steam, ensuring maximum heat transfer and reducing fuel consumption

They are ideal for both light and heavy condensate loads. This makes them perfect for high-output equipment such as heat exchangers and large process units.

If it fails open, live steam is lost and energy costs rise. If it fails closed, condensate builds up, reducing efficiency and risking water hammer and equipment damage.

Most models incorporate an automatic air vent. This allows rapid warm-up by removing air and non-condensable gases during start-up.

Yes. Spirax Sarco offers ball float steam traps such as the FTC and FT series for high-pressure and heavy-duty industrial applications.

They should be checked at least annually, with critical process traps inspected more frequently. Regular inspection prevents hidden inefficiencies and system damage.

Many Spirax Sarco models are fully maintainable, allowing internal components to be replaced without removing the body. This reduces downtime and long-term costs.

They combine mechanical precision, long service life, and proven reliability. With a wide range of sizes and materials, they deliver continuous, efficient condensate removal across any steam system.

Please feel free to request information and advice using the form below or call us on 0151 547 1221

Spirax Sarco Ball Float Steam Traps