STAINLESS STEEL DN300 Eccentric Rubber Seat Vacuum Butterfly Valve

The stainless steel 316L lug style anti-mixing water butterfly valve operates by rotating a central disc mounted on a shaft inside the valve body. When the valve is opened, the disc turns parallel to the flow, allowing water to pass smoothly with minimal pressure drop. When closing, the disc rotates perpendicular to the flow and presses firmly against the valve seat, creating a tight seal that prevents leakage and cross-mixing of fluids. The lug-style body allows secure flange installation and supports end-of-line service without removing the opposite flange. The 316L stainless steel construction ensures excellent corrosion resistance, durability, and reliable performance in water treatment, industrial, and sanitary pipeline systems.

Valve parts

• Eccentric disc design reduces friction between the disc and rubber seat, ensuring smooth operation, long service life, and reliable sealing performance under vacuum or low-pressure conditions.
• The rubber seat provides excellent elastic sealing, preventing leakage and enabling tight shutoff even under varying pressure and temperature conditions.
• Stainless steel construction offers superior corrosion resistance, durability, and strength, making the valve suitable for industrial, sanitary, and vacuum piping systems.
• Wafer or lug-style body allows secure installation between flanges, easy maintenance, and minimal pipeline disruption during servicing.
• Suitable for controlling liquids, gases, or low-viscosity media, offering precise flow regulation, low pressure drop, and efficient operation in vacuum and process pipelines.

The stainless steel DN300 eccentric rubber seat vacuum butterfly valve is widely used in industries requiring airtight flow control, such as vacuum packaging, pharmaceutical processing, and chemical manufacturing. For example, it can regulate air or gas flow in vacuum conveyors, control inert gas in chemical reactors, or maintain sterile conditions in pharmaceutical pipelines, ensuring reliable sealing and preventing contamination in sensitive processes.