Metal Hard Seal Butterfly Valves: Introduction, Structural Features & Technical Parameters

Metal Hard Seal Butterfly Valves adopt a three-eccentric multi-layer metal sealing structure, with no mechanical wear, achieving zero leakage. They have excellent two-way sealing performance and are the optimal devices for regulating flow, cutting off or connecting fluids in pipelines with different media such as petroleum, chemical, metallurgy, electric power, food, medicine, water supply and drainage, and gas transmission. By selecting different materials, they can be applied to media such as water, sewage, seawater, air, steam, gas, flammable gas, corrosive media, oil products and food, with a maximum operating temperature of up to 600℃.

Structural Features

• Small opening torque, flexible and convenient operation, labor-saving and energy-efficient.

• Three-dimensional eccentric structure ensures that the butterfly plate becomes tighter as it closes, with reliable sealing performance and zero leakage.

• High pressure resistance, corrosion resistance, wear resistance and long service life.

• Reasonable design, compact structure, and quick opening and closing.

• Small opening torque, friction-free rotation of the sealing pair, ensuring long service life of the valve.

• Replacing the valve body material and the composite interlayer of the sealing ring can be applied to different media.

Technical Parameters of Metal Hard Seal Butterfly Valves

• Nominal Diameter: DN50～1100mm

• Pressure Range: PN1.0～PN1.6mpa

• Applicable Temperature: -19～+420℃

• Applicable Medium: Water, oil products, gas, etc.

• Connection Type: Wafer type, Flanged type

• Valve Structure: Double eccentric, Three eccentric

• Sealing Form: Hard seal

• Transmission Mode: Manual, Electric Actuated, Pneumatic

• Valve Body Material: Ductile iron, Carbon steel, 304 stainless steel, 316 stainless steel

• Valve Stem Material: 304 stainless steel, 316 stainless steel

• Valve Disc Material: Ductile iron, Carbon steel, 304 stainless steel, 316 stainless steel

• Sealing Material: Cemented carbide, 304 stainless steel, 316 stainless steel

• Manufacturing Standards: American Standard, National Standard, German Standard