Pneumatic Double Eccentric Flange Butterfly Valve

• Customization: Available
• Media: Oil
• Driving Mode: Pneumatic
• Connection Form: Flange
• Structure: Centre Sealing
• Seal Form: Force Sealed
• Valve Stem: Extended
• Work Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)
• Working Temperature: Medium Temperature (120°C<T<450°C)
• Material of Seal Surface: Soft Sealed
• Valve Body: Forge Welding
• Standard: ISO
• Application: Industrial Usage, Water Industrial Usage
• Usage: Oil Gas Water Industrial
• Colour: Customer′s Request
• Transport Package: Wooden Cases
• Trademark: XM
• Origin: Wuxi, China
• Production Capacity: 10000

Product Description

Industrial-Grade Flow Control Solution

Our Flange Butterfly Valve with Pneumatic Actuator combines robust construction with automated precision for efficient flow regulation in demanding industrial applications. Designed for reliability and long service life, this valve system offers exceptional performance in liquid, gas, and semi-solid media handling.

Key Features & Benefits

 High-Performance Design

• Lug-type or Wafer-style flanges (ANSI/DIN/JIS standards)

• Double-offset or Triple-offset disc design for bubble-tight shutoff

• Fire-safe construction available (API 607/6FA compliant)

 Premium Materials

• Body: Ductile iron (GGG50), CF8/CF8M stainless steel, or special alloys

• Disc: 316SS, aluminum bronze, or nickel-plated options

• Seat: EPDM, NBR, PTFE, or metal-seated versions

 Advanced Pneumatic Actuation

• Double-acting or spring-return configurations

• Rack-and-pinion or Scotch-Yoke mechanisms

• 5-7 bar (72-101.5 psi) operating pressure

• 90° rotation in <2 seconds for rapid process control

 Smart System Integration

• ISO 5211 mounting pad for easy actuator installation

• Compatible with:

  • Position indicators

  • Limit switches

  • Smart positioners (4-20mA, HART, Fieldbus)

Technical Specifications

Parameter	Specification
Size Range	2" to 96" (DN50 to DN2400)
Pressure Rating	ANSI 150#/300# (PN10 to PN50)
Temperature Range	-40°C to 650°C (material dependent)
Leakage Class	ANSI Class IV, V, or VI (soft seat)
Actuator Torque	5Nm to 50,000Nm (size dependent)
Media Compatibility	Water, steam, oils, gases, slurries

Industrial Applications

• Water & Wastewater Treatment

  • Pump discharge control

  • Filter backwash systems

• Oil & Gas

  • Pipeline isolation

  • Tank farm operations

• Power Generation

  • Cooling water systems

  • Flue gas desulfurization

• Chemical Processing

  • Corrosive media handling

  • Batch processing

• HVAC Systems

  • Chilled water control

  • Thermal energy storage

Customization Options

• Special Coatings: Epoxy, Xylan, or rubber-lined

• Extended Stem: For insulated or buried service

• High-Performance Seats: For abrasive or high-purity applications

• Explosion-Proof: ATEX, IECEx certified actuators

• Sanitary Designs: 3-A, EHEDG compliant for food/pharma