German TEKAWE valves TEKAWE models TEKAWE prices

TEKAWE valves are known as steam traps, also called automatic drains or condensate dischargers. They are categorized for use in steam systems and gas systems. Steam traps are installed at the end of steam-heated pipelines to continuously discharge condensate from the pipes to the outside. Most steam traps can automatically distinguish between steam and water (excluding thermodynamic types), thereby achieving automatic steam blocking and drainage. Steam traps are widely used in industries such as petrochemicals, food and pharmaceuticals, and power plants, playing a significant role in energy saving and emission reduction.

TEKAWE valve classification

1) Free float ball steam trap: Simple structure, with only one moving part inside: a finely polished stainless steel hollow float ball, which acts as both the float and the opening/closing component. There are no wearing parts, resulting in a long service life. The steam trap is equipped with a Y series automatic air venting device, which is highly sensitive, can automatically vent air, and ensures high operating quality. When the equipment starts up, the air in the pipeline is discharged through the Y series automatic air venting device. Low-temperature condensate enters the steam trap, the condensate level rises, the float ball rises, the valve opens, and the condensate is rapidly discharged. Steam quickly enters the equipment, causing rapid heating. The temperature-sensitive liquid in the Y series automatic air venting device expands, closing the automatic air venting device. The steam trap begins normal operation, with the float ball rising and falling with the condensate level to block steam and drain water. The valve seat of the free float ball steam trap is always below the liquid level, forming a water seal with no steam leakage, resulting in good energy-saving effects. Minimum working pressure 001Mpa, continuous drainage is unaffected by temperature and working pressure fluctuations within the range from 001Mpa to the maximum operating pressure. It can discharge condensate at saturation temperature, with a minimum subcooling of 0℃, ensuring no water remains in the heating equipment and allowing it to achieve optimal heat exchange efficiency. The back pressure rate is greater than 85%, making it one of the most ideal steam traps for production process heating equipment. 2) Free semi-float ball steam trap: The free semi-float ball steam trap has only one moving part: a semi-float ball bucket with the opening facing downward. The ball bucket serves as both the opening/closing component and the sealing component. The entire spherical surface can provide sealing, resulting in a long service life, resistance to water hammer, no wearing parts, failure-free operation, durability, and no steam leakage. The back pressure rate is greater than 80%. It can discharge condensate at saturation temperature, with a minimum subcooling of 0℃, ensuring no water remains in the heating equipment and allowing it to achieve optimal heat exchange efficiency. When the device just starts, the air and low-temperature condensate in the pipeline enter the steam trap through the discharge tube. The bimetallic air venting element inside the valve pushes the ball bucket open, the valve opens, and the air and low-temperature condensate are rapidly discharged. When steam enters the ball bucket, the ball bucket generates upward buoyancy. At the same time, the temperature inside the valve rises, the bimetallic air venting element contracts, the ball bucket floats towards the valve port, and the valve closes. When the steam in the ball bucket turns into condensate, the ball bucket loses buoyancy and sinks, the valve opens, and the condensate is rapidly discharged. When steam enters the ball bucket again, the valve closes again, operating intermittently and continuously. 3) Lever float ball steam trap: The basic characteristics of the lever float ball steam trap are the same as those of the free float ball type. The internal structure consists of a float ball connected to a lever that drives the valve core, opening and closing the valve according to the rise and fall of the condensate level. The lever float ball steam trap uses double valve seats to increase condensate discharge capacity, achieving a small size with large discharge volume. The maximum condensate discharge capacity reaches 100 tons/hour, making it the most ideal steam trap for large heating equipment. 4) Inverted bucket steam trap: Inside the inverted bucket steam trap is an inverted bucket that acts as the level-sensitive component. The bucket opening faces downward, and the inverted bucket is connected to a lever that drives the valve core to open and close the valve. The inverted bucket steam trap can vent air, is resistant to water hammer, and has good anti-fouling performance. The subcooling is small, the steam leakage rate is less than 3%, and the maximum back pressure rate is 75%. It has more connecting parts, and its sensitivity is not as good as that of the free float ball steam trap. Since the inverted bucket steam trap relies on the upward buoyancy of steam to close the valve, it is not suitable for selection when the working pressure difference is less than 01MPA. When the device just starts, the air and low-temperature condensate in the pipeline enter the steam trap. The inverted bucket falls due to its own weight, driving the lever to open the valve core, and the air and low-temperature condensate are rapidly discharged. When steam enters the inverted bucket, the steam in the bucket generates upward buoyancy, the inverted bucket rises, and the connected lever drives the valve core to close the valve. There is a small hole on the inverted bucket. When part of the steam is discharged through the small hole, another part of the steam condenses into water. The inverted bucket loses buoyancy, sinks due to its own weight, and the connected lever drives the valve core to open the valve, cycling the operation and draining intermittently. 5) Combined superheated steam steam trap: The combined superheated steam steam trap has two isolated valve chambers connected by two stainless steel tubes. It is a combination of a float ball steam trap and an inverted bucket steam trap. The valve structure is advanced and reasonable. Under working conditions of superheat, high pressure, and small load, it can timely discharge the condensate formed when superheated steam disappears, effectively preventing superheated steam leakage, and ensuring high operating quality. The maximum allowable temperature is 600℃. The valve body is made of full stainless steel, and the valve seat is made of hard alloy steel, resulting in a long service life. It is a specialized steam trap for superheated steam, has obtained two national patents, and fills a domestic gap. When condensate enters the lower valve chamber, the float ball of the auxiliary valve rises with the liquid level, and the float ball seals the steam inlet pipe hole. The condensate rises through the inlet conduit to the main valve chamber. The inverted bucket falls due to its own weight, driving the valve core to open the main valve and discharge the condensate. When the condensate level in the auxiliary valve chamber drops, the float ball falls with the liquid level, and the auxiliary valve opens.Steam enters the inverted bucket in the upper main valve chamber through the steam inlet pipe. The inverted bucket generates upward buoyancy, and the inverted bucket drives the valve core to close the main valve. When the condensate level in the auxiliary valve chamber rises again, the next cycle begins, draining intermittently.

TEKAWE valve selection

When selecting a steam trap, do not choose based solely on the maximum discharge capacity. Pay special attention: It is strictly prohibited to select a steam trap based only on the pipe diameter. Selection must be based on the principles of steam trap selection and combined with the specific conditions of the condensate system. Generally, selection should be made based on the following three aspects. 1) First, determine the type of steam trap based on the heating equipment and the requirements for condensate discharge. For heating equipment that requires the fastest heating speed and strict control of heating temperature, it is necessary to ensure that condensate does not accumulate in the heating equipment; any water present must be discharged. In this case, it is best to choose a mechanical steam trap that can discharge saturated water. Because it is a steam trap that discharges water whenever it is present, it can timely eliminate the adverse consequences caused by water accumulation in the equipment, rapidly improving and ensuring the heating efficiency required by the equipment. For heating equipment with a large heating surface and less stringent requirements for heating speed and temperature control, where water accumulation is permissible, such as steam heating drainage and process tracing line drainage, it is best to choose a thermodynamic steam trap. For medium and low-pressure steam transmission pipelines, the condensate generated in the pipeline must be rapidly and completely discharged; otherwise, it is easy to cause water hammer accidents. An increased water content in steam lowers the steam temperature, failing to meet the process requirements of steam-using equipment. Therefore, it is best to choose mechanical steam traps for medium and low-pressure steam transmission pipelines. 2) Secondly, determine the nominal pressure and valve body material of the steam trap based on the maximum working pressure and maximum working temperature of the steam-using equipment; determine the connection method and installation method of the steam trap, etc. The nominal pressure of steam traps is generally divided into: 06Mpa, 10Mpa, 20Mpa, 25Mpa, 40Mpa, 50Mpa. When selecting, the nominal pressure of the steam trap must not be lower than the maximum working pressure of the steam-using equipment. At the same time, select the valve body material based on the nominal pressure, maximum working temperature, and installation environment of the steam trap. For nominal pressure ≤ 10Mpa, select cast iron or carbon cast steel; for nominal pressure > 10Mpa, select carbon cast steel or alloy cast steel. The maximum working temperature of the steam trap is determined by the steam used by the steam-using equipment. The selection should not be lower than the temperature of the used steam. Steam traps have two installation methods: horizontal and vertical, determined by the connection position between the pipeline and the steam trap. The connection methods of steam traps include threaded, flanged, welded, and wafer types. They must be determined based on the maximum working pressure, maximum working temperature of the steam trap, and the requirements of the corresponding connection parts of the steam-using equipment. 3) Finally, determine the performance parameters of the steam trap based on the magnitude of the drainage volume. In addition to matching the pressure, temperature, and other parameters of the steam trap with the conditions of the equipment used, the drainage volume of the steam trap under various pressure differences is an important factor in selecting a steam trap. If the drainage volume of the selected and installed steam trap is too small, it will not be able to timely discharge all the condensate reaching the steam trap, causing the condensate to be blocked and flow back, ultimately resulting in blockage and significantly reducing the heating efficiency of the equipment. Conversely, selecting a steam trap with too large a discharge volume will lead to premature wear and failure of the valve closing components. As the valve body size increases, its manufacturing cost will also increase, which is not economical. Therefore, the amount of condensate generated in the equipment or pipeline must be correctly measured or calculated using formulas to provide conditions for the correct selection of steam traps.

TEKAWE valve structure

Good sealing performance, but the load of the working medium borne by the ball is entirely transmitted to the outlet sealing ring. Therefore, consideration must be given to whether the sealing ring material can withstand the working load of the ball medium. Under high pressure impact, the ball may shift. This structure is generally used for medium and low-pressure ball valves. Valve fixed ball ball valve Valve fixed ball ball valve The ball of the ball valve is fixed and does not move under pressure. Fixed ball ball valves are equipped with floating valve seats. Under medium pressure, the valve seat moves, pressing the sealing ring tightly against the ball to ensure sealing. Bearings are usually installed on the upper and lower shafts of the ball, resulting in small operating torque, making them suitable for high-pressure and large-diameter valves. To reduce the operating torque of ball valves and increase sealing reliability, oil-sealed ball valves have emerged. Special lubricating oil is injected between the sealing surfaces to form an oil film, which enhances sealing performance and reduces operating torque, making them more suitable for high-pressure, large-diameter ball valves.

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