Free Float Steam Traps | Karajet, Iran
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The Free Float Steam Trap is one of the most efficient types of steam traps. It uses a free-floating mechanism to discharge condensate from the system efficiently while minimizing steam loss and preventing energy waste.
The Karajet Free Float Steam Trap features a simple free-floating mechanism with only one moving part, ensuring reliable and stable operation. This design contributes to a long service life and reduced risk of failure, resulting in significant savings in maintenance and repair costs.
Introduction
The Karajet Free Float Steam Trap is a type of mechanical steam trap that distinguishes between condensate and steam based on their differences in density and level. When condensate enters the trap chamber, it can lift the free-floating ball from its seat. The free float is a hollow, seamless metal ball positioned on a temperature-sensitive lever and over the outlet orifice. As the ball rises, the outlet orifice opens, allowing condensate to discharge from the system.
Once the condensate has been completely discharged and the trap chamber becomes filled with live steam, the free-floating ball returns to its seat and closes the outlet orifice, preventing the loss of live steam.
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The use of a free-float mechanism with only one moving part makes the trap simple in design while ensuring stable and reliable operation. This design contributes to a long service life and reduced failure rates, resulting in significant savings in maintenance and repair costs.
Advantages and Features of the Free Float Steam Trap
- Simple design with only one moving part (free-floating ball)
- Large contact area between the float and its seat, reducing wear and improving sealing performance
- Good resistance to water hammer
- Rapid condensate and air discharge, even under varying flow conditions, making it suitable for applications where condensate recovery is important
- Internal stainless-steel strainer
Operating Principle and Stages of the Free Float Steam Trap
1. Start-up Discharge 
During start-up, when the steam trap is cold, the air-vent ring keeps Valve A open, allowing air to be discharged completely. As the previously accumulated cold condensate enters the trap, the free-floating ball rises and opens outlet orifice B, allowing the condensate to discharge.
2. Hot Condensate Discharge 
After air and other non-condensable gases have been discharged and steam and condensate enter the trap, the trap heats up and Valve A closes. However, as long as condensate is present, it can continue to lift the free-floating ball from its seat, allowing condensate to discharge through Orifice B.
3. Continuous Response 
The entry of air or residual condensate into the trap causes the temperature to decrease, resulting in contraction of the air-vent ring. Valve A immediately opens to discharge the air. When higher-temperature condensate enters the trap, the ring expands and closes Valve A.
4. Complete Closure 
When condensate flow to the trap stops, the float closes Valve B, which is always sealed below the water level. The upper part of the trap chamber becomes filled with steam, keeping Valve A closed. The trap is then completely sealed, preventing the leakage of live steam.
Types of Karajet Free Float Steam Traps
Free-Floating Ball
At Karajet, a knowledge-based company, all stages of design and manufacturing of our steam traps are carried out in-house and are completely localized, without reverse engineering. Therefore, the free-floating metal ball is no exception and is manufactured by Karajet.
Conclusion
With its simple design, limited number of components, and high resistance to operating conditions, the Karajet Free Float Steam Trap is a suitable choice for a wide range of industries, including food processing, chemical, textile, and other industries where reliable operation and optimized energy consumption are important.
You can download the Karajet Steam Traps catalog from the link below.