Butterfly Valve

Butterfly Valve for Sunrui BWTS

The Bray S20 DN50 butterfly valve is a manually operated, wafer-style valve made from ductile iron, designed for use in pipeline systems handling sanitary, mildly corrosive, and toxic media. Conforming to national standards, this valve operates under normal pressure, allowing unidirectional flow in ambient temperature environments. The S20 model features an on/off switch structure and is suitable for pipeline applications, with a nominal diameter ranging from 25mm to 500mm and a nominal pressure of up to 1.6MPa.

The Bray 20/21 series valves are not only ideal for sanitary applications but also offer unique internal flow characteristics. The 20 series is a wafer-style design with flange mounting holes, while the 21 series is a lug-style design, suitable for end-of-line service and other flange requirements.

Product Features:

• One-piece disc/stem design ensures durability and stable performance.
• High Cv value and low-pressure drop for efficient fluid passage.
• Wide temperature range: -20°F to 400°F (-29°C to 204°C), meeting diverse application needs.

Material Specifications:

• Body Material: Cast iron, stainless steel, aluminum, ductile iron.
• Disc/Stem Material: Stainless steel, coated stainless steel (covered with EPDM or BUNA-N rubber).
• Seat Material: BUNA-N rubber, EPDM, PTFE, FKM, polyurethane.

Application Scenarios: Suitable for fluid control in sanitary service, mildly corrosive, and toxic media environments.

The S20 DN50 butterfly valve offers versatile wafer and lug-style installation options, catering to a wide range of industrial needs and ensuring efficient operation of pipeline systems.