A Ductile Iron Soft Seal Butterfly Valve is a high-performance quarter-turn valve designed for reliable flow control in water, air, and mild chemical applications. It combines the strength and durability of ductile iron construction with a soft (elastomeric) seat, ensuring excellent sealing and corrosion resistance.
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Key Specifications:
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Size: DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600;
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Pressure: PN16 (drill hole 150LB);
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Material: Body: A536 65-45-12, Disc&Ball: Iron, Stem: SS420, Seat: Neoprene;
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End connection: Lug, FF.
Key Features:
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Ductile Iron Body: Provides superior strength, impact resistance, and longevity compared to cast iron.
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Soft Seat (Elastomer Lined): Ensures bubble-tight sealing with materials like EPDM, NBR, or Viton, suitable for varying temperatures and media.
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Concentric Design: The disc rotates around a central shaft, offering low torque operation and smooth performance.
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Lug or Wafer Style: Available in lug-type (for bolted flange installation) or wafer-type (for compact, flange-mounted systems).
Advantages:
Excellent Sealing Performance – Soft seats ensure zero leakage, meeting industry standards like ISO 5208, ANSI, or AWWA.
Durable & Cost-Effective – Ductile iron offers better mechanical properties than cast iron at a competitive price.
Low Maintenance & Easy Operation – Requires minimal upkeep and can be automated with actuators.
Wide Temperature & Pressure Range – Typically rated for -20°C to 120°C (-4°F to 248°F) and pressures up to 16 bar (232 psi) depending on seat material.
Versatile Applications – Used in potable water, fire protection, HVAC, and industrial processes.
