Ductile Iron GGG50 Butterfly Valve

A ductile iron GGG50 butterfly valve is a lightweight, quarter-turn rotary valve engineered primarily for municipal water distribution, wastewater management, and HVAC utility lines. Cast from GGG50 ductile iron (equivalent to EN-GJS-500-7), the valve body offers exceptional tensile strength, impact toughness, and ductility compared to standard gray cast iron, preventing brittle fracturing under piping stress. Typically configured as a concentric wafer or lug-type valve, it features a disc that rotates 90 degrees against a resilient elastomer seat (such as EPDM or NBR) to achieve a low-torque, bubble-tight seal. Conforming to standards like EN 593, ISO 5211, and BS 5155, these economical valves are ideal for low-to-medium-pressure, non-corrosive fluid applications, allowing civil contractors and utility managers to secure cost-effective flow control by importing certified GGG50 butterfly valves directly from leading manufacturers in China via our advanced B2B commercial platform.