China Flanged Butterfly Valve Suppliers - Stainless Steel & EPDM Rubber for DN50-DN2400 | Factory Direct Quality
This high-quality flanged butterfly valve is manufactured in China, featuring a robust stainless steel body that guarantees exceptional corrosion resistance and durability, making it perfect for harsh industrial conditions. Enhanced with an EPDM rubber seat, it offers a tight seal and excellent weather resistance. Designed for efficiency, this compact valve provides a low pressure drop and is easy to install, making it ideal for applications in chemical processing, water treatment, and food-grade fluid control. As a reliable product from trusted suppliers in the industry, it is compliant with ISO standards, ensuring precision regulation for your fluid management needs. Choose this factory-manufactured butterfly valve for outstanding performance and reliability
Handle / Worm gear / Electric / Hydraulic / Peneumatic
Standard
DIN/ANSI/GOST/JIS/BS
Product Description
Butterfly valves stand out as versatile fluid control solutions, characterized by a robust yet streamlined design that adapts to a wide range of operational demands. Their fundamental structure includes a valve body, rotating closure disc, transmission shaft, and sealing assembly—each component optimized to balance flow control efficiency and structural simplicity. The valve body, often forged or cast, provides structural support, while the closure disc rotates around the shaft to modulate flow, offering rapid on-off switching or throttling capabilities.
Material Selection: Material choices are guided by the nature of the fluid being conveyed: PTFE-lined bodies excel in handling corrosive substances, brass alloys are suitable for potable water systems, and high-strength alloy steels cater to high-pressure industrial environments. Advanced models may integrate composite materials or superalloys to reconcile durability and lightweight properties, making them ideal for offshore or aerospace fluid control systems.
Sealing reliability is achieved through two main configurations: soft-seal and hard-seal designs. Soft-seal solutions use elastic polymers to ensure tight closure at low pressures, while hard-seal options employ metal-to-metal contact, designed to withstand high-temperature steam or abrasive fluids. Both designs prioritize leak prevention, safeguarding system efficiency and operational safety.
Butterfly valves find application across numerous sectors: marine engineering employs them for ballast water regulation, pharmaceutical facilities use hygiene-grade variants for process fluids, and power plants rely on them for cooling water management. Their adaptability also extends to wastewater treatment and chemical processing, where resistance to varying media and pressure conditions is crucial.
Operational modes range from manual control with lever handles for small valves to automated systems powered by pneumatic cylinders or electric motors. These automated setups enable integration with central control systems, facilitating precise flow tuning and remote operation—key for large-scale facilities aiming to optimize process control and minimize downtime.
Frequently Asked Questions
Q: What are the standard materials used for the body and disc of your butterfly valves?
Our butterfly valves feature Ductile Iron as the standard body and disc material, which provides excellent structural strength and durability for various fluid control applications.
Q: What is the difference between soft-seal and hard-seal designs?
Soft-seal designs utilize elastic polymers (such as EPDM) to ensure tight closure and leak prevention at lower pressures. Hard-seal designs employ metal-to-metal contact, allowing the valve to withstand high-temperature steam or abrasive fluids.
Q: What operational modes are supported by these butterfly valves?
They support a wide range of operational modes including manual control (via lever handle or worm gear) and automated systems powered by electric, hydraulic, or pneumatic actuators for seamless system integration.
Q: Which standards do your flanged butterfly valves conform to?
Our flanged butterfly valves conform to major international standards including DIN, ANSI, GOST, JIS, and BS, ensuring compatibility with global piping configurations.
Q: In what size ranges are these butterfly valves available?
We offer flanged butterfly valves in sizes ranging from DN50 up to DN2400 to support both small-scale systems and large industrial pipelines.
Q: What industrial sectors commonly use these butterfly valves?
These valves are widely utilized in marine engineering (ballast water), pharmaceutical facilities (hygiene-grade process fluids), power plants (cooling water), wastewater treatment, and chemical processing plants.
