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China Suppliers Flanged Butterfly Valve Factory - Stainless Steel & PTFE DN50-DN2400 for Industrial Use
📋 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
? What are the primary components of a butterfly valve?
A butterfly valve's core structure consists of a valve housing, a pivotal disc, a drive spindle, and a sealing system. These components work together to regulate flow with minimal energy loss.
? How do I choose the right material for a butterfly valve?
Material selection depends on the fluid medium and working conditions. Anti-corrosive stainless steel is ideal for chemical applications, technical polymers fit low-pressure water systems, carbon steel serves general industrial needs, and titanium or duplex steel is preferred for extreme temperatures or abrasive media.
? What is the difference between flexible and metal seals in butterfly valves?
Flexible seals (made of NBR or PTFE) ensure a tight, leak-proof closure in low-pressure scenarios. Metal seals (typically stainless steel or alloy-based) are designed to withstand high pressures and high temperatures while maintaining a precise, reliable seal.
? In which industries are butterfly valves most commonly applied?
They are widely used in urban water management, oil and gas refineries, building HVAC systems, and the food processing industry, where food-grade materials are required to meet strict hygiene standards.
? What operation methods are available for butterfly valves?
Operation methods range from manual control using handles or worm gears for smaller systems, to automated options including pneumatic (air-driven), hydraulic, or motorized (electric) actuators for large-scale industrial setups.