Pneumatic flanged eccentric butterfly valve

### 1. Product List
- Triple Eccentric Pneumatic Flange Butterfly Valve: Hard Seal, Zero Leakage, High Temperature & Corrosion Resistance, Specialized for Petrochemical Industry, DN50-DN1600 - Pneumatic Flange Hard Seal Butterfly Valve: Bidirectional Sealing, Adjustable Flow, Specialized for Power Plants & Sewage Treatment Plants, Customizable Stainless Steel Material - High-Performance Pneumatic Eccentric Butterfly Valve: Flange Connection, Quick Opening & Closing, Wear-Resistant Seal with Long Service Life, Suitable for High-Temperature & High-Pressure Working Conditions - Industrial-Grade Pneumatic Triple Eccentric Butterfly Valve: Metal Hard Seal for Leakage Prevention, Used for Flow Control in Food, Pharmaceutical & Chemical Pipelines - Large-Diameter Pneumatic Flange Butterfly Valve: DN50-DN1600, Hard Alloy Overlay Welding, Pneumatic Quick-Opening Regulating Valve

### 2. Detailed Product Description
#### Core Product Advantages:

Triple Eccentric Structure to Solve Industrial Sealing Problems
Adopting a three-dimensional eccentric design (the valve stem axis is offset from the butterfly disc center and the valve body center, with the sealing pair in an inclined cone structure), it completely eliminates the sliding friction issue of traditional butterfly valves during opening and closing. The butterfly disc separates from the sealing surface immediately when opening, and only makes momentary contact with the seal when closing, achieving the dual breakthroughs of zero wear and zero leakage. Equipped with a pneumatic actuator, it enables 90° quick opening and closing with a response time of ≤10 seconds, meeting the requirements of emergency shutdown and precise regulation in industrial pipelines.

#### Rigorous Performance Parameters:
Adapting to Strict Requirements of Multiple Working Conditions

#### Structural Details:
Dual Upgrade in Durability and Maintainability

1. Sealing System: Adopts a "U-shaped stainless steel sealing ring + flexible graphite laminated structure", which combines the strength of metal hard seals and the adaptability of elastic seals. It has no aging at high temperatures and no brittleness at low temperatures.
2. Valve Body & Butterfly Disc: Optional materials include cast iron, cast steel, and stainless steel. Large-size butterfly discs adopt a truss structure, featuring a large flow area, low flow resistance, and significant energy-saving effects.
3. Installation & Maintenance: Supports installation in any direction without being restricted by the medium flow direction; the sealing ring is embedded in the butterfly disc via a pressure plate, allowing replacement without disassembling the entire valve, thus reducing maintenance costs.

#### Multi-Industry Adaptation:
Full-Scenario Coverage from Heavy Industry to People’s Livelihood

• Heavy Industry Sector: Oil and natural gas transportation, chemical reaction kettle control, power plant boiler water supply, metallurgical blast furnace gas regulation.
• Environmental Protection & Water Treatment: Interception in sewage treatment plants, flow regulation in waterworks, control of sewage lifting pump stations.
• Food & Pharmaceutical Industry: Pipeline shutdown for dairy products, liquid medicine transportation regulation, fluid control in beer production lines.
• Municipal Engineering: Steam control in thermal pipelines, safety shutdown for gas transportation, flow diversion in rainwater pipe networks.

#### Quality Assurance & Services

1. Strictly complies with standards such as GB/T13927-92 and API598 for factory inspection; each valve is accompanied by a pressure test report.
2. Supports material customization (304/316 stainless steel, Cr-Mo steel, etc.) and actuator selection (intelligent regulation available with positioner).
3. Provides a 1-year warranty; a professional technical team offers 7×24-hour consultation on installation and maintenance.