0102030405
Flanged Butterfly Valve DN50-DN2400 - China Suppliers & Factory with Stainless Steel and PTFE for Industrial Applications
Product Specification
| Product Name | Butterfly Valve | Body/Disc Material | Stainless steel |
| Type | Flanged | Shaft | SS304/SS316 |
| Size | DN50-DN2400 | Seal | PTFE |
| Operation | Handle/Worm gear/Electric/Hydraulic/Peneumatic | Standard | DIN/ANSI/GOST/JIS/BS |
Product Description
Butterfly valves rank among the most widely used fluid control devices, defined by a compact and functional design that delivers reliable performance across sectors. Their core structure consists of a valve housing, pivotal disc, drive spindle, and sealing system—components synergized to regulate flow with minimal energy loss. The housing, often cast from durable materials, encases the disc, which rotates 90 degrees around the spindle to either permit or block fluid passage, while the spindle transfers force from the operating mechanism to the disc.
Material selection is tailored to the fluid medium and working conditions. Anti-corrosive metals like stainless steel are ideal for chemical handling, technical polymers suit low-pressure water systems, and carbon steel serves general industrial needs. For extreme environments involving high temperatures or abrasive media, premium materials such as titanium or duplex steel are adopted to ensure long-term structural stability.
Sealing performance relies on two primary designs: flexible seal components and metal seal interfaces. Flexible seals, crafted from materials like NBR or PTFE, ensure tight closure in low-pressure scenarios, while metal seals—typically stainless steel or alloy-based—withstand high pressures and temperatures, achieving leak-proof performance through precise contact between the disc and valve seat.
These valves are extensively applied in diverse industries: urban water management leverages their cost-efficiency, oil and gas refineries use them for medium-pressure fluid transfer, and building HVAC systems benefit from their space-saving design. They also play a vital role in food processing, where food-grade materials meet strict hygiene requirements.
Operation methods vary by scale: small-scale systems utilize manual operation with crank handles, while large industrial setups adopt air-driven or motorized actuators. Automated operation enables remote monitoring and precise flow adjustment, reducing manual intervention and boosting process stability—essential for applications demanding consistent performance.
Frequently Asked Questions
Q1. What materials are commonly used for butterfly valve bodies and discs?
Butterfly valves utilize materials selected based on the fluid medium and working conditions. Options range from anti-corrosive metals like stainless steel for chemical processing, technical polymers for low-pressure water systems, and carbon steel for general industrial uses. For extreme environments, premium materials like titanium or duplex steel are utilized.
Q2. What is the difference between flexible seals and metal seals in butterfly valves?
Flexible seals (made of materials like NBR or PTFE) ensure a tight closure and are typically used in low-pressure scenarios. Metal seals (usually stainless steel or alloy-based) are engineered to withstand high pressures and extreme temperatures, achieving leak-proof performance through precise contact between the disc and the valve seat.
Q3. In which industries are butterfly valves most commonly applied?
Butterfly valves are widely used in urban water management, oil and gas refineries for medium-pressure fluid transfer, building HVAC systems, and food processing applications where food-grade materials are required to meet strict hygiene standards.
Q4. What operation methods are available for these butterfly valves?
Operation methods can be selected according to system scale and requirements. Options include manual operation (using handles or worm gears) for smaller setups, and automated operation (using electric, hydraulic, or pneumatic actuators) for large-scale, remote, or high-precision flow control.
Q5. What size range and manufacturing standards do you support?
Our butterfly valves are available in sizes ranging from DN50 to DN2400. They are designed and manufactured to comply with major international standards, including DIN, ANSI, GOST, JIS, and BS.