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PDCPD Large Diameter Butterfly Valve

  • Size: 32”-48” Model: Wafer Style
  • Body: PDCPD Operator: Gear
  • Seat: EPDM, FKM Disc: PDCPD
  • Max Working Press: 110 psi Stem: 403 and 316 stainless steel
  • Max Working Temp: 175°F

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Product Description:

The PDCPD butterfly valve features a molded lined valve body with a full-seat design, eliminating the need for additional gaskets and providing an airtight seal. The valve is equipped with O-ring seals, exhibiting excellent chemical resistance. Its spherical shape reduces breakaway and sealing torques, thus extending the cycle life. The wafer-style body minimizes space constraints. The valve body and disc of the giant butterfly valve are composed of polydicyclopentadiene (PDCPD), which are the only parts in contact with the medium. The valve also has non-wetted metal components, including the stem and internal components, providing additional strength.

The PDCPD butterfly valve has a molded ISO bolted top flange for attachment installation. The valve size ranges from 32 inches to 48 inches, with a maximum rated working pressure of 110 psi (175°F).

The PDCPD butterfly valve is a plastic valve with a quarter-turn, equal percentage flow characteristic. They provide moderate flow control, making them suitable for both on/off and throttling services. They have good tolerance to suspended solids but are not recommended for use with slurries or debris. PDCPD large-diameter butterfly valves are ideal for various fluid flow applications.


Size: 32”-48” Model: Wafer Style

Body: PDCPD Operator: Gear


Max Working Press: 110 psi Stem: 403 and 316 stainless steel

Max Working Temp: 175°F

Size: 32”-48” Model: Wafer Style
Body: PDCPD Operator: Gear
Max Working Press: 110psi Stem: 403 and 316 stainless steel
Max Working Temp: 175°F

Physical Properties

Density: Typically between 1.02 to 1.05 g/cm³.

Water Absorption: Typically very low, less than 0.05%.

Coefficient of Thermal Expansion: Typically between 5 to 10 x 10^-5 /°C.

Mechanical Properties

Tensile Strength: Typically between 30 to 50 MPa.

Yield Strength: Typically between 20 to 40 MPa.

Elongation at Break: Typically between 5 to 10%.

Flexural Strength: Typically between 50 to 70 MPa.

Impact Strength (Unnotched): Typically between 10 to 20 kJ/m².

Thermal Properties

Heat Deflection Temperature (HDT): Typically between 100 to 130°C, depending on load and testing standards.

Glass Transition Temperature (Tg): Typically around 100°C.

Maximum Continuous Service Temperature: Typically between 80 to 100°C.

Chemical Properties

Chemical Resistance: PDCPD exhibits good corrosion resistance to various acids, bases, salts, and organic solvents.

Weather Resistance: PDCPD has good UV and weather resistance, suitable for outdoor use.

Electrical Properties

Volume Resistivity: Typically between 10^14 to 10^16 Ω·cm.

Dielectric Strength: Typically between 15 to 25 kV/mm.

Dielectric Constant: Typically between 2.5 to 3.5.

Flame Retardancy

Flame Rating: Typically achieves UL94 V-0 rating.

Processing Properties

Molding Shrinkage: Typically between 0.5 to 1.5%.

Processability: PDCPD can be processed into complex shapes through processes such as Reaction Injection Molding (RIM).


  • Excellent corrosion resistance: The valve body and disc are made of PDCPD, eliminating concerns about corrosion from acids and alkalis.
  • Impact Resistance: PDCPD has high impact strength, maintaining good toughness even in low-temperature environments.
  • Lightweight: Compared to metal materials, PDCPD has a lower density, making PDCPD butterfly valves lighter and easier to install and operate.
  • Design Flexibility: PDCPD is easy to mold, allowing for the manufacturing of complex-shaped valve components, providing more flexibility in butterfly valve design.
  • Wear Resistance: PDCPD has good wear resistance, suitable for applications requiring long-term operation.
  • Environmental Adaptability: PDCPD butterfly valves have high resistance to environmental stress cracking, suitable for use in outdoor or harsh climatic conditions.


  • Chemical Industry: Used in pipeline systems handling various chemicals, acids, bases, and solvents.
  • Water and Wastewater Treatment: Controls water and sewage flow in water treatment and wastewater facilities.
  • Food and Beverage Industry: Used to control fluid flow in food and beverage production, especially in situations requiring compliance with hygiene standards.
  • Energy Industry: Used to control oil and gas flow in oil and gas extraction, especially in corrosive media environments.

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