
Large Size Ggg50 Ductile Iron Worm Gear Flanged Butterfly Valve EPDM Seat Manual Valve for Water Treatment Works. GGG50 Ductile Iron Body: High impact resistance with anti-rust blue epoxy coating for complex underground environments. EPDM Soft-Seal Zero Leakage: Full rubber liner seat minimizes water leakage loss and reduces operational waste. Worm-Gear Manual Operation: Light operating torque allows convenient on-site maintenance without complex tools. Wide Size Range: Available in DN50 to DN1200 to fit various pipeline project requirements. DIN EN593 Standard: Manufactured strictly according to DIN EN593 standard for PN16 flange connection. Customizable Coating: Different coating colors can be customized for bulk orders. OEM & Bulk Order Support: Support OEM marking and full-range DN sizes for municipal and water treatment projects. Rigorous Quality Testing: Every valve undergoes air tightness and strength tests before delivery.