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1, API specifications are well known, API609 has in fact become an international standard for valves used on industrially important pipelines. Tritec is designed and manufactured in full compliance with the latest 1997 edition of API609 specifications. What is even more valuable is that Tritec's basic design is not limited to API specifications, BS5155ANSIB16.34, ASMESECVIII, and other major specifications. This ensures that Tritec has application in all industrial fields.
2. Double safety structure Tritec strictly complies with API609 specifications, in order to prevent the deformation of the butterfly plate caused by the influence of fluid pressure and temperature, dislocation of the stem, sealing of the sealing surface, and two independent parts on the lower side of the butterfly plate respectively. The thrust ring, thus ensuring the normal operation of the valve under any conditions;
At the same time, in order to prevent accidental accidents caused by damage or flight of the valve stem caused by unknown reasons, independent stem ejection prevention mechanisms are designed at both the inside and outside of the lower end of the valve, which also guarantees the pressure level of Tritec from the side. Can do up to 2500 pounds.
3, no dead zone design Tritec in the design process, in particular taking into account the application issues in the regulatory area, make full use of the sealing principle of the three eccentric butterfly valve, so that when the valve switch does not scrape the valve seat, the valve rod torque through The butterfly plate is directly transmitted to the sealing surface, which means that there is almost no friction phenomenon between the disc and the valve seat, thus eliminating the common jumping phenomenon of opening the ordinary valve, eradicating all kinds of friction, etc. within the low opening range of the valve. The regulation caused by the stability factor is not a phenomenon, ie the eradication of the dead zone (insensitive zone) means that the Tritec can enter the controllable zone from the opening of 0 to 90 degrees, and its normal control ratio is 2 More than times, the maximum control ratio can be as high as 100:1 or more. This creates a good condition for the use of Tritec as a regulating valve, especially when the large diameter, the cost of the shutoff valve is extremely high, in addition, the shutoff valve cannot achieve zero leakage, in the case of emergency shut down, must be in the shutoff valve The installation of shut-off valves on the side, and Tritec's integration of regulation and shut-down, is economically significant.
4. Body seat structure There are two valve seat installation structures for the three-offset butterfly valve. Most of them are installed on the butterfly plate for convenience of illustration. However, Tritec adopts a body seat structure to install the valve seat on the body. The advantage is that compared with the butterfly valve seat, the chance of the valve seat directly contacting the medium is greatly reduced, thereby reducing the degree of erosion of the valve seat and prolonging the service life of the valve seat.
5. Thin-seat valve seat structure Tritec's valve seat is made of stainless steel sheet and graphite sheet laminated. This structure can effectively prevent the impact of tiny solids in the medium and the sealing surface may be caused by thermal expansion, even if tiny The damage will also not cause leakage, which is unthinkable for double-eccentric butterfly valves or other triple-offset butterfly valves.
6. The replaceable sealing pair Tritec's sealing pair is unique, not only the body seat can be replaced, but also because the butterfly plate sealing surface and the butterfly plate are independent, the butterfly plate sealing surface can also be replaced, that is to say when the butterfly plate Seals When the surface is damaged, there is no need to send engineers back to the factory or dismantle the valve in a large scale, and only the butterfly plate sealing surface can be replaced. This not only greatly reduces the maintenance cost, but also greatly reduces the maintenance man-hours and maintenance intensity and difficulty.
7. Balanced and fixed structure Based on the characteristics of the sealing surface of the triple-eccentric butterfly valve, Tritec's sealing and fixing method adopts bolt elliptical distribution and fixing, which not only ensures accurate positioning, but also balances the force of each bolt and eliminates stress distribution. Misaligned seals loose and leak.
8. Intrinsically Fire-Resistant Construction Many valves claim to have a fire-resistant construction, but a large number of them use a soft-hard dual-seat construction in order to reduce leakage, which is actually dangerous. Because the incomplete combustion of the soft seal seat in the fire will cause the metal support valve seat to produce stress, temperature difference deformation, resulting in failure of the fire resistance function. Therefore, at present, Europe and the United States are gradually eliminating such unrealistic fire-resistant valves. Because Tritrc is a zero-leakage, it does not require the assistance of a soft seal, it is a true fire-resistant structure, and it is certified by the fire resistance inspection of API607, API6FA, and BS6755Part2. This ensures that Tritec can be applied to various hazardous areas such as petroleum and petrochemicals. The use of valves in the critical parts of the conservative UK and its North Sea oil fields is almost entirely exemplified by Tritec.
9, high seal packing structure in the valve leakage problems, the traditional focus is always on the valve seat leakage, that is, the inner leakage, while ignoring the leakage of the filling part, that is, leakage. In fact, it is an indisputable fact that in the contemporary society where environmental issues are increasingly being emphasized, the risk of leakage is far greater than that of endoleaks. Tritec three eccentric valve is a rotary valve, the valve stem movement is only 90 ° rotation, and this valve valve, valve and other valve stem action for the spiral multi-rotation reciprocating movement, the filler part of the wear degree is very low, relative The long service life, and Tritec's use of the highest standard design for preventing external leaks such as packing seals, allows the standard seal performance to be maintained below 100ppm when subjected to an external leak test under EPA21 specifications. In fact, in the current Tritec test results, in the case of Lloyds monitoring, the external leakage value was as low as 7ppm. These indicators mean that Tritec can play a role in toxic and hazardous medium pipelines in various fields such as chemical engineering.
Conclusion In summary, the three-eccentric butterfly valve is the crystallization of the latest technology in valves, the length of various valves, and the shortness of various valves. It will surely attract more and more attention from users and designers. Batec Valve Co., Ltd. Tritec, its maximum pressure rating can reach 2500 pounds, the standard diameter can be 48 inches, and the clips, lugs, flanges, ring joints, butt welding, jackets, various structure length, etc. All of them can correspond to each other, even more because Tritec's large selection of materials, high and low temperature, and various corrosive media such as acids and alkalis can also respond freely. In particular, in terms of large diameter, with its zero leakage advantage, on the shut-off valve, it is constantly replacing the large gate valve and ball valve. Also, with its excellent regulating function, on the regulating valve, it is constantly replacing the bulky The cut-off valve. As a matter of fact, Tritec has so far been used in various important pipelines, including China's oil and gas exploration, offshore platforms, oil refining, petrochemicals, inorganic chemicals, energy power generation, and other major industrial process control.
Overview: Since its inception, the triple-eccentric disc valve has undergone self-improvement and continuous development processes in order to meet increasingly harsh working conditions. Even the most basic zero-leakage, theoretically three-disc disc valve can do it, but in fact it still depends on careful design and precision manufacturing. In addition to drawing and summarizing the lengths of other brands of three-compartment disc valves, Bartek Valve Co., Ltd. introduced its own unique tri-commutation disc valve Tritec. Its characteristics are as follows: