The design principle of an extension bar hard seal butterfly valve is similar to that of a soft seal butterfly valve but with a few key differences.
The hard seal butterfly valve has a metal-to-metal seal or a seal made of materials like PTFE, which provides a more durable seal than soft seals. The metal-to-metal seal is made when the valve is closed, and the disc is pressed against the valve seat with a high degree of force, providing a tight shut-off against the flow medium. The PTFE seal is made of a tough, inert material that can withstand high temperatures, pressures, and corrosive fluids.
The extension bar is attached to the stem to extend the length of the valve handle, allowing the valve to be operated from a distance or in hard-to-reach locations. The stem connects the disc to the valve actuator and allows the disc to be rotated to control the flow of fluid.
The operation of an extension bar hard seal butterfly valve is based on a quarter-turn principle. When the valve actuator is rotated, the disc rotates around its axis to open or close the valve. The metal-to-metal seal or PTFE seal on the disc provides a tight shut-off against the flow medium, reducing the risk of leakage and ensuring reliable performance.
Why choose us!
WESDOM patent products, patent certification
The product side flanges comply with national, German, Russian, American, British and Japanese standards and other domestic and international standards
for multiple pressures, easy connection and wide adaptability, which can reduce the type of purchase and stock.W
The product has an independent identity to ensure traceability
Each wesdom product has its own unique identification number, to ensure product traceability.E
Provide material inspection report
All wesdom products can provide the material inspection report of the main parts.S
One-stop service, we not only supply high quality products, also supply solutions and after-sales service.D
WESDOM has a lot of project experience
We have a lot of project experience in countries such as Pakistan and the Philippines, WESDOM has always been noticed all over the world, and trust comes from quality.O
WESDOM has a strict quality control system
WESDOM has a strict quality control system and before delivery, we test 100% of each product to ensure its quality, promising you a high quality product.M
Quality Control Process
WESDOM GROUP consists of 5 factories and 4 overseas branches. The five factories are mainly located in Tianjin, Hebei, Shandong,
Lianyungang and Wenzhou. The four foreign branches are located in Tanzania, Zambia, Kenya and Indonesia.
Advantages of extension bar soft seal butterfly valve!
The extension bar allows the valve to be operated from a distance or in otherwise hard-to-reach locations, making it easier to maintain and control
the flow of fluid.W
The soft seal on the butterfly valve provides a tight, reliable seal against the flow medium, reducing the risk of leakage and improving performance.E
Fast, efficient operation
Butterfly valves are known for their fast-acting, quarter-turn operation, which can help to reduce downtime and increase productivity.S
Lower maintenance costs
The simple design of butterfly valves means that they are often easier and less expensive to maintain than other types of valves.D
Butterfly valves can be used in a wide range of applications and fluid types, including water, air, gas, and chemicals, making them a versatile choice
for many industries.O
Our products, your purpose
We have always abided by our commitment to partnerships, meeting or exceeding the requirements of each customer.M
Project Name: Tanzania Water Project
Main Products: Gate Valves, Butterfly Valves, Check Valves, Pipe Fittings, etc.
The customer sent us the installation pictures of the WESDOM product in the working condition project, and the feedback quality is very good, and will maintain a long-term cooperative relationship with WESDOM;
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