Traps play an indispensable role in the efficient operation of industrial steam systems, acting as the "heart valve" of the system, precisely controlling the discharge of condensate and ensuring the stability and energy efficiency of the steam system. Among the many steam traps available, Spirax Sarco's TD-type thermodynamic steam traps have become the trusted choice for industries around the world, thanks to more than 70 years of technological advancement and continuous innovation.

More than 70 years of technical precipitation, casting excellent quality

Since its introduction in 1950, Spirax Sarco's Type TD thermodynamic steam trap has been at the forefront of technological innovation. With continuous improvements, today's TD traps are synonymous with ruggedness and reliability, capable of handling any demanding steam system.

The unique three-hole condensate outlet design is the finishing touch. This design ensures the perfect action of the stainless steel disc, allowing the trap to close tightly under a variety of operating conditions while ensuring uniform flow characteristics. This not only greatly extends the service life of the product, but also avoids the hassle of frequent seat replacements, which saves companies a great deal of maintenance costs.

To date, Spirax Sarco has supplied more than 6,000,000 TD traps to 200,000 customers in a wide range of industrial scenarios around the globe, a statistic that is undoubtedly a testament to its superior quality.

A wide range of models and flexible configurations to meet diverse needs

Spirax Sarco's TD type thermodynamic steam traps have an extensive product line covering a wide range of models such as TD16, TD25, TD42 series, TDC46M, TDS46M, TD62LM/TD62M, and TD120M, which are able to meet the needs of different pressures, diameters, and connection methods.

  • Wide pressure rangeThe TD120M model is available for low to high pressure scenarios, with a maximum working pressure of 250 bar g to meet the rigors of high pressure steam systems.
  • Multiple connectionsThe products include threaded connections (BSP or NPT), flanged connections (e.g. DN15, 20, 25, PN16, PN40, etc.), socket welded (e.g. BS 3799 Class 3000), and butt-welded, etc., which can be adapted to different pipeline installation environments.
  • High-quality valve body materialMost of them are made of stainless steel and other high-quality materials, such as stainless steel (ENP) for some models of the TD42 series, and stainless steel 1.4308/ASTM A351 CF8 for the TDS46M valve body, which ensures the durability and corrosion resistance of the trap.

In addition, Spirax Sarco offers a wide range of optional accessories, such as heat shields (for use in low-temperature or humid environments to prevent excessive heat dissipation that can cause the trap to operate too frequently), drain valves (for easy in-line cleaning of the strainer), and anti-air lock discs (to prevent air locking during startup), to make the trap adaptable to a wide range of complex workplaces.

Superb working principle to ensure efficient operation

Spirax Sarco Type TD Thermodynamic Steam Traps work in an ingenious and efficient manner, taking full advantage of the differences in the properties of steam and condensate:

  1. kick-start phase: Inlet pressure pushes the disk up and cooler condensate and air can be discharged quickly, ensuring a fast start-up of the system.
  2. Closure phaseThe secondary steam is generated when hot condensate passes through the trap. The high-speed movement of the secondary steam creates a low-pressure zone below the disc, while the secondary steam accumulates in the chamber above the disc, and the dual pressures bring the disc close to the valve seat, closing the inlet and preventing the steam from leaking.
  3. recurring phaseWith the condensation of secondary steam above the disc, the pressure drops, the disc rises again, the valve reopens to discharge condensate, and so on, realizing the continuous and efficient discharge of condensate.

Among them, the design of the anti-air lock disk is even more unique. It consists of 3 separate sheets. When activated, the bimetallic disc allows the air in the control chamber to be discharged through the holes in the upper sheet as well as the 2 holes in the bimetallic sheet and the small hole in the bottom; when activated, the bimetallic disc closes the small hole in the bottom when it begins to arch back, effectively stopping the loss of vapor.

Multiple usage advantages to empower industrial production

The advantages of Spirax Sarco's Type TD Thermodynamic Steam Traps are numerous, and they bring many advantages to industrial production:

  • Compact and easy to install: Light weight reduces labor and material costs during installation, and the ability to install horizontally and vertically reduces installation space constraints.
  • Reliable sealing and reduced leakage: Unique knife edge design prevents leakage without the need for gaskets, ensuring a tight system and reducing energy waste.
  • Easy maintenance and stable operation: There is only one moving part - stainless steel disc, which greatly reduces the probability of failure, and the maintenance work is simple and easy to ensure the long-term stable operation of the equipment.
  • High emission efficiency and significant energy savings: Rapid discharge and tight closure without backsiphonage ensures that the equipment maintains ideal efficiency and reduces unnecessary consumption of steam to achieve energy savings.
  • Durable and adaptable: Sturdy construction, resistant to adverse factors such as overheating, water hammer, freezing and vibration, and long service life.
  • Easy status determination and managementThe disc will make a "clicking" sound when it is closed, so staff can easily determine if the trap is working properly, making it easier to identify and deal with problems in a timely manner.
  • Professional support, service guarantee: Spirax Sarco provides professional technical support and service to make users worry-free in the process of using.

Wide range of application scenarios to help various industries

Thanks to its outstanding performance, Spirax Sarco TD thermodynamic steam traps play an important role in a wide range of industries and scenarios:

  • Steam Supervisor: Discharge condensate in a timely manner to prevent the occurrence of water hammer, improve steam quality, and ensure the safe and stable operation of the main line.
  • Pressing equipment: Removes condensate quickly and effectively, ensuring the temperature required for the press machine is stable and reducing product waste due to temperature fluctuations.
  • Non-primary companion line (production line): Its simple design allows it to perform the de-watering of non-major lines and ensure the basic operation of the line.
  • Key Tracer Hotline (Material Insulation): The ability to remove condensate as soon as it is generated ensures ideal heat transfer, eliminates the risk of material condensation, and safeguards the quality of the material.

With more than 70 years of experience, superior technology and outstanding performance, Spirax Sarco's TD steam traps are the right choice for industrial steam systems. No matter what your industry or steam system needs, Spirax Sarco's TD steam traps can provide you with efficient, reliable solutions that help you improve productivity and save energy. For more information, please visit Spirax Sarco's website at www.spiraxsarco.com/cn.

Technical Data Download

Thermodynamic Trapsupdate20200309 (1).pdf

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