W&T high-performance industrial butterfly valves - the embodiment of German precision and cutting-edge fluid control wisdom

W&T's high-performance industrial butterfly valves, especially the three-offset all-metal hard-sealed butterfly valves, are high-end fluid control equipment that integrate German precision manufacturing and intelligent control. This is a type of industrial heavy equipment that has dual functions of regulation and cut-off, and can achieve "bidirectional zero leakage" in lifeline projects such as thermal power, petrochemicals, and metallurgy. The following is a detailed introduction to Viti butterfly valves, including their outstanding technical advantages, wide range of application scenarios, and solid qualification certifications.

Viti industrial butterfly valves have gained worldwide recognition

 I. Revolutionary Advantages of the "Three Eccentricities" Design

Viti triple eccentric metal-sealed stainless steel butterfly valve

The core technology of the Viti butterfly valve lies in its unique three-eccentric geometric structure. This design fundamentally changes the opening and closing method of traditional butterfly valves, achieving a major technological innovation.

1. Completely eliminate friction and greatly extend service life: Through three-dimensional eccentricity (the valve shaft is located behind the valve seat sealing surface, deviating from the pipeline centerline, and the sealing cone axis deviates from the valve shaft centerline), it ensures that the butterfly plate disengages from the valve seat at the moment of opening, and there is no friction throughout the opening and closing process. Compared with traditional valves, this design avoids the wear and scratch of the sealing pair, significantly extending the service life under frequent operating conditions.

2. Bidirectional zero leakage, achieving "tight seal" : The three eccentric structure combined with metal hard seal, due to the CAM effect, the sealing pair is pressed tighter and tighter when closed, ensuring zero leakage. It has solved the common problem of valves not closing tightly and being prone to internal leakage in environments with high flow rates and high erosion. It even outperforms most traditional gate valves, truly achieving a tight and thorough closure.

3. Small operating torque and excellent regulating performance: Due to the frictionless opening and closing and the smooth CAM effect of the eccentric shaft design, the operating torque required for the valve is greatly reduced. The Viti butterfly valve also features an approximately equal percentage flow characteristic, enabling it to function both as a on-off valve and to control the medium flow very sensitively. It can largely replace Globe type control valves to achieve cost optimization.

Ii. Core parameters for adapting to extreme working conditions  

Viti butterfly valves are specially designed to handle extremely harsh working conditions. They have hardcore technical parameters and can maintain extremely high stability in a variety of complex environments

Extreme cold test of Viti valves

1. Extreme temperature zone, all-scenario linkage: The applicable temperature range is extremely wide, from -196℃ (suitable for the deep cryogenic field of LNG) to a high temperature of 850℃ (suitable for molten salt, high-temperature steam and other environments), almost covering all the temperature zones required for the entire industrial process, making it a truly all-weather valve.

2. Ultra-high pressure, the hardest choice: Made by surfacing Stellite alloy with corresponding materials and undergoing full metal hard sealing treatment, the pressure rating can reach up to Class 2500, far exceeding that of conventional butterfly valves, and can perfectly handle critical control in high-pressure pipeline systems.

3. Perfect balance between large diameter and compact design: Viti can provide super-large diameter triple eccentric butterfly valves with a maximum diameter of 64 inches. Meanwhile, its structural length is significantly shorter than that of traditional gate valves, effectively reducing installation space and piping weight, and saving engineering material costs.

Iii. Focus on key areas of energy and industry

Represented by industries with strict requirements for valves such as thermal power, cryogenic treatment, and heating, Viti butterfly valves have accumulated numerous mature application achievements and typical cases.

1. Precise execution of deep peak shaving: During the flexibility transformation, cylinder cutting operation and deep peak shaving of thermal power plants, the Viti hydraulic three eccentric butterfly valve (such as those successfully applied in Harbin No.1 Thermal Power Plant, etc.) has stable performance and outstanding features of high temperature resistance, wear resistance and zero leakage over long periods, providing an important guarantee for the safe heating of units under low and wide loads.

2. Strict chemical engineering, precise control: In the petrochemical, refining and other fields, the Viti high-pressure triple eccentric butterfly valve can achieve rapid cut-off and precise regulation of high-pressure pipelines with a small torque, effectively replacing the bulky traditional valves.

3. Convenient maintenance for cost reduction and efficiency improvement: Viti also excperforms in detailed design: The valve seat can be easily replaced online without disassembling the valve, the high-wear-resistant hardened sealing ring has a lifespan far exceeding industry standards, and the dynamic load packing ensures that it can withstand 5,000 on-off cycles without external leakage adjustment. In addition, external intelligent locators and iot modules can be installed, which simplifies the maintenance difficulty and ensures the lowest operation and maintenance costs and a long stability period to the greatest extent.

Four. Strict qualification guarantee and intelligent control

Every Viti butterfly valve is accompanied by multiple rigorous international tests and qualification guarantees before leaving the factory.

1. Global Certification Viti Valves adhere to core design standards such as ASME, ISO, DIN, and BS, and hold multiple key qualifications including API 607 fire safety certification, ISO 9001 system certification, TS special Equipment Production License, and TSG special equipment type Test certificate. Many proprietary valve technologies have obtained patents in 26 countries around the world. This standardization and high traceability ensure the functional safety of the product under various harsh working conditions.

2. Diverse and intelligent: Viti butterfly valves can flexibly adapt to pneumatic, electric, (electro-hydraulic) and other driving methods, support rapid response and intelligent control, and when combined with a digital DCS system, can meet various automation control requirements.

In conclusion, the Viti butterfly valve is not only the embodiment of German precision and cutting-edge fluid control wisdom, but also a "hardcore player" capable of handling all kinds of complex and extreme working conditions. Viti - not just valves, but also synonymous with solutions for high-pressure and harsh working conditions.