A GGG40 butterfly valve is a compact, quarter-turn rotary valve featuring a body cast from GGG40 ductile iron (equivalent to EN-GJS-400-15 / ASTM A536 Grade 65-45-12), offering superior impact resistance and tensile strength compared to standard cast iron. The internal disc rotates 90 degrees within the pipeline to regulate flow or provide tight shutoff, compressing against a resilient elastomeric seat (such as EPDM or NBR) or a high-performance metal seat. Its lightweight wafer, lug, or flanged profile drastically lowers installation stress and structural support requirements. GGG40 butterfly valves are heavily utilized in municipal water supply networks, industrial wastewater treatment plants, HVAC cooling loops, and low-pressure utility lines. Procurement managers and municipal infrastructure developers can reduce pipeline costs and simplify installation logistics by importing premium GGG40 butterfly valves straight from elite manufacturers in China through our B2B commercial platform.
