Triple Offset Butterfly Valve is a high-performance valve, widely used in industrial fields that require strict sealing and high temperature resistance. Compared with traditional butterfly valves, the triple offset butterfly valve has a unique design with an eccentric structure that includes the eccentricity of the valve stem, the eccentricity of the valve disc, and the eccentricity of the valve seat. This design makes the valve disc almost frictionless with the valve seat during opening and closing, thus reducing wear and prolonging service life. In addition, the triple eccentric butterfly valve has good pressure resistance and high temperature resistance, which is suitable for high temperature and high pressure working conditions, such as petroleum, chemical, electric power and other industries. It has excellent sealing performance and can realize zero leakage, which is ideal for achieving high efficiency and safe operation. Overall, with its unique design and excellent performance, the triple eccentric butterfly valve has become an important device in the field of industrial control.
Source: CNLD
The working principle of the Triple Offset Butterfly Valve relies on its unique design to ensure its reliability and sealing performance under high pressure, high temperature and corrosive environments. Unlike traditional butterfly valves, triple eccentric butterfly valves realize their function through three eccentric positions:
First eccentric: an offset of the valve stem relative to the centerline of the sealing seat. This offset reduces friction and wear when the valve opens and closes, thus extending the service life of the valve.
Second eccentric: offset of the valve disc relative to the centerline of the valve body. This offset allows the valve disc to be in parallel contact with the sealing seat when closed, thus reducing friction.
Third eccentric: the tapered design of the sealing surface. The tapered sealing surface allows the valve to progressively compress the seal as it closes, ensuring zero leakage performance. This design allows the valve to achieve tight closure even under high differential pressure.
In practice, when the Triple Eccentric Butterfly Valve opens, the valve disc will first separate from the sealing seat, reducing friction during opening. With further rotation of the valve stem, the valve disc gradually opens completely, allowing the medium to flow freely. When it is necessary to close the valve, the valve stem reverse rotation, the valve disc is gradually close to and finally pressed against the sealing seat, to ensure that the medium is completely cut off.
The advantages of triple offset butterfly valve are mainly reflected in the following aspects:
First of all, its triple offset design makes there is almost no contact between the valve flap and the valve seat during opening and closing, thus greatly reducing wear and tear and torque requirements. This frictionless design not only extends the service life of the valve, but also reduces maintenance costs, especially for frequent opening and closing conditions.
Secondly, the triple offset butterfly valve has excellent sealing performance. Its unique metal sealing structure can still maintain good sealing effect and prevent leakage in high temperature and high pressure environments. This makes the valve widely used in petrochemical, natural gas, electric power and metallurgy and other industrial fields that require strict sealing.
In addition, the light weight and compact structure of the triple offset butterfly valve makes it relatively easy to install and operate. This not only reduces the space occupied by the equipment, but also reduces the difficulty and cost of installation and transportation. In addition, the valve also has strong corrosion resistance and can operate stably for a long time in corrosive media such as acid and alkali, ensuring the safety and reliability of the system.
Overall, the triple offset butterfly valve has become an indispensable and important equipment in modern industry by virtue of its long life, low maintenance, high sealing and wide applicability.
There are many top Triple Offset Butterfly Valve manufacturers around the world dedicated to providing quality TOBV products. Here are seven leading manufacturers:
Source: CNLD
With more than 30 years of experience in the design and manufacture of triple eccentric butterfly valves, CNLD Valve is committed to providing customers with high-quality valve solutions. CNLD Valve’s triple eccentric butterfly valves are uniquely designed to ensure reliable sealing performance under high pressure and high temperature conditions. Its products are widely used in petroleum, chemical, natural gas, electric power and other industries, and are trusted by customers for their excellent performance and durability.
Source: Emerson
Emerson, through its Fisher brand, is a globally recognized valve manufacturer known for the high reliability and longevity of its products. Emerson invests heavily in valve technology research and development, ensuring that its products perform excellently even in the most demanding conditions. Their TOBV products are widely used in energy, chemical, and industrial sectors.
Source: Flowserve
Flowserve is one of the world’s leading suppliers of fluid motion and control products. Their Triple Offset Butterfly Valves are renowned for their high performance and durability. With multiple manufacturing facilities and service centers globally, Flowserve provides comprehensive solutions for its customers. Their products are extensively used in the oil, gas, and power industries.
Source: Crane
Crane Co. is widely recognized for its innovative design and efficient sealing performance in Triple Offset Butterfly Valves. Their product line includes various sizes and materials to meet the needs of different complex working conditions. Crane Co. is dedicated to delivering high-quality valve products and excellent customer service, continually enhancing its market competitiveness.
Source: Pentair
Pentair is a global leader in water treatment and fluid control solutions, known for the precision and reliability of its TOBV products. Pentair’s product designs emphasize energy efficiency and environmental friendliness, making them widely applicable in industrial, water treatment, and marine sectors. Their Triple Offset Butterfly Valves hold a significant position in the international market.
Source: Velan
Velan is a renowned Canadian valve manufacturer, famous for the high performance and long lifespan of its TOBV products. Velan’s products are manufactured to strict international standards and are widely used in the oil, gas, and nuclear industries. The company focuses on technological innovation, continually introducing new products to meet market demands.
Source: IndiaMart
Weir Group is a globally known engineering company, celebrated for the quality and reliability of its Triple Offset Butterfly Valves. Weir’s product designs emphasize detail and customer needs, making them widely used in mining, oil, and gas sectors. The company is committed to delivering top-notch products and services, earning the trust of customers worldwide.
CNLD valves stand out in the highly competitive valve industry due to their superior market advantages. Known for innovative design and superior quality, CNLD Valves ensure unmatched reliability and performance in a wide range of applications. Its products are rigorously tested to meet or exceed international standards.CNLD Valves’ customer-centric approach to providing customized solutions, timely delivery and excellent after-sales support significantly enhances customer satisfaction. Advanced manufacturing techniques and state-of-the-art equipment enable them to offer competitive prices without compromising on quality. In addition, CNLD Valves’ commitment to sustainable and environmentally friendly practices and strict adherence to global environmental standards make them the first choice for environmentally conscious customers.
With the acceleration of industrialization and the growing demand for energy, the application prospects for Triple Offset Butterfly Valves in the global market are promising. The increasing demand for high-performance valves drives manufacturers to intensify their technological innovation efforts to meet market needs. The TOBV market is expected to continue its steady growth, particularly in sectors such as energy, chemicals, oil, and natural gas.
Q1: When to use a triple offset valve?
Use a triple offset valve when precise shut-off, zero leakage, and reliable performance in high-pressure, high-temperature, or corrosive environments are required. They are commonly used in industries such as oil and gas, chemical processing, and power generation.
Q2: What is the preferred flow direction of a triple offset butterfly valve?
Triple offset butterfly valves are typically designed to allow bidirectional flow. This design ensures effective control of fluid in both directions. However, depending on specific applications and conditions, there may be a more preferred direction for optimal performance. It’s always a good practice to refer to the manufacturer’s guidelines or technical specifications for detailed recommendations.
Q3: What are the flow characteristics of a Triple Offset Butterfly Valve?
Triple Offset Butterfly Valves have excellent flow control characteristics, with a flow characteristic curve that approximates an equal percentage relationship. This means that the flow change is proportional to the change in the valve opening, allowing precise flow control.
Q4: Are Triple Offset Butterfly Valves suitable for abrasive media?
Yes, Triple Offset Butterfly Valves can handle abrasive media. The metal-to-metal sealing and durable materials used in their construction make them resistant to wear and erosion, which is essential for applications involving abrasive or particulate-laden fluids.
Q5: Are there any specific standards or certifications for Triple Offset Butterfly Valves?
Yes, Triple Offset Butterfly Valves are often manufactured in compliance with various international standards and certifications, such as API 609, ASME B16.34, and ISO 9001. These standards ensure the valves meet stringent quality and performance criteria.
