Durable Butterfly Valves For Industrial Flow Control Systems
The Dafugui butterfly valve uses a disc-shaped closing element that rotates around the valve stem to open and close. It is durable, easy to maintain, and can be used to control the flow of various fluids such as air, water, and steam. It is suitable for various corrosive media, mud, oil, liquid metals, and radioactive media.
What are their functions and uses?
Butterfly valves typically open to close less than 90°. The valve and stem themselves lack self-locking capability; therefore, a worm gear reducer is installed on the stem for positioning the butterfly plate. Using a worm gear reducer not only gives the butterfly plate self-locking capability, allowing it to stop at any position, but also improves the valve's operational performance.
What are the characteristics of industrial butterfly valves?
They are heat-resistant, have a wide applicable pressure range, large nominal diameter, and the valve body is made of carbon steel. The valve plate's sealing ring uses a metal ring instead of a rubber ring. Large high-temperature butterfly valves are manufactured using welded steel plates and are mainly used in flue gas ducts and gas pipelines for high-temperature media.
Installation and Maintenance
1. During installation, the valve disc should be in the closed position.
2. The opening position should be determined by the rotation angle of the butterfly plate.
3. For butterfly valves with a bypass valve, the bypass valve should be opened first before the main valve.
4. Installation should be performed according to the manufacturer's installation instructions. For heavy butterfly valves, a stable foundation should be provided.
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Low Temperature Butterfly Valve
Dafugui's Low Temperature Butterfly Valve is suitable for industrial control systems with media temperatures ranging from -40℃ to -253℃, primarily used in cryogenic fluid systems such as liquefied natural gas, liquid oxygen, and petrochemical tail gas separation. Since its inception, Dafugui has always prioritized technology import and independent innovation, obtaining numerous certifications and becoming a preferred supplier in many industries.
Hydraulic Control Check Butterfly Valve
Established in 2006, Dafugui Pipe Valve Co., Ltd. specializes in the research, development, production, and sales of flanges, pipe fittings, valves, and other pipeline accessories. Among them, the Hydraulic control check butterfly valve is a pipeline control device that integrates mechanical, electrical, and hydraulic systems. It is mainly used at the inlet of hydropower turbines and the outlet of pumps in water conservancy and power pumping stations. It can replace the traditional combination of check valve and gate valve, and has the functions of shut-off, check valve, and water hammer elimination.
High Temperature Butterfly Valve
Dafugui specializes in the research, development, production, and sales of flanges, pipe fittings, valves, and other pipeline accessories. Dafugui's High Temperature Butterfly Valve feature simple structure, small size, light weight, rapid opening and closing, 90° reciprocating rotation, and low driving torque. They are used to cut off, connect, and regulate media in pipelines, exhibiting excellent fluid control characteristics and sealing performance.
Elastic Seat Butterfly Valve
Dafugui is one of China's leading professional butterfly valve manufacturers and suppliers. Our elastic seat butterfly valve is a high-performance industrial valve used for cutting off, connecting, and regulating pipeline media. It is mainly used in high-temperature, high-pressure, and corrosive media environments in the petrochemical, metallurgical, and energy industries. Dafugui elastic seat butterfly valves can operate at temperatures up to 600°C and are suitable for steam, gas, and hot air conveying systems. If you are interested in our low-priced products, please visit our factory to discuss business.
High-performance Butterfly Valve
Dafugui is a large-scale butterfly valve manufacturer and supplier in China, and we have been focusing on valve production for many years. Our high-performance butterfly valve is a type of valve used for shutting off or regulating fluid media. It features simple structure, rapid opening and closing, low flow resistance, and a very competitive price.
Metal Hard Seal Butterfly Valve
Dafugui has been dedicated to the production and manufacturing of butterfly valves for many years, and is one of China's leading professional butterfly valve manufacturers and suppliers. Our metal hard seal butterfly valve, also known as a flap valve, is a regulating valve characterized by a metal-to-metal seal. It is mainly used for on/off control and throttling of low-pressure pipeline media. It achieves opening and closing through the rotation of an eccentric disc-shaped butterfly plate around its axis from 0° to 90°, featuring a simple structure, small size, and rapid opening and closing. Customers are very satisfied with our customized products and excellent service. If you are interested in our low-priced products, we will offer preferential prices and free samples. We sincerely welcome new and old customers to visit our factory for business discussions.
Dafugui has been producing Butterfly Valve for many years and is one of the professional manufacturers and suppliers in China. Customers are satisfied with our customized products and excellent service.
